Tell you the truth, India is in a way way more bad situation financially than china(whose foreign reserve alone is twice india total GDP and enjoys a huge trade surplus unlike india). Theres simply no comparison. I dont know if what you said was sarcasm or u were serious.
Coming to the topic, talk of the yuan or even less so the rupee replacing the dollar is far fetched, the dollar will remain the world reserve curency for a longggg period to come, for at least 3 decade or more.
China who is the only country who i believe in a distant future stands a chance of replacing the dollar, still has lots of catch up to do financially speaking. China will have to liberalise its financial system/ market/allow its currency to float freely, implement real market reforms and allow its economy to be more market oriented than state/investment led. There are lots of things it will have to do to achieve this. I dont see that happening anytime soon. As an example we can see how most large chinese internet/technology companies who are as big as their american counterparts read BAIDU, alibaba, qihoo, tencent, JD etc are all listed/about to be listed in the U.S instead of their home country in china (though some are listed in hongkong as well). This shows that china financial market is still relatively backward compared with the U.S. so even though china might be the world largest trader it still has a longggg way to go to make its currency on par with the dollar.
India has even less chance since its world trade is almost insignificant below even south korea. However india financial market is quite open/similar to that of the west, mainly because their system is derived/inherited from our system in the U.K since we colonised the country . In this aspect India is ahead of china in its financial market/stock market openess/liberalisation.
So overall all these talk of dollar being replaced is just mere wishful thinking. Many things will have to happen for that to be a reality IMO. The U.S will still remain the worlds dominant power for decades to come.