I think its possible as per latest HSBC report..
1. China- Size of Economy (Year 2000 dollars): $25.3 trillion
Income per capita (Year 2000 dollars): $17,759
Detail: HSBC predicts that China will overtake the U.S. in size sometime over the next 50 years as its population surges to 1.43 billion. Even with the increase, its income per capita will remain outside the top 50 nations
2. United States of America
Size of Economy (Year 2000 dollars): $22.3 trillion
Income per capita (Year 2000 dollars): $55,134
Detail: Even though the U.S. is no longer number one, the size of its economy will have doubled while adding roughly 90 million people to its population
3. India
Size of Economy (Year 2000 dollars): $8.1 trillion
Income per capita (Year 2000 dollars): $5,060
Detail: India's economy will have skyrocketed by 2050, growing from $960 billion to more than $8 trillion. The country will also add 400 million more people to its population over the next half century
4. Japan
Size of Economy (Year 2000 dollars): $6.4 trillion
Income per capita (Year 2000 dollars): $63,244
Detail: Japan's population will decline markedly over the next 50 years, but its economy will still grow by $1.4 trillion. Together, income per capita will rise ever higher — ranking fourth in the world.
5Size of Economy (Year 2000 dollars): $3.7 trillion
Income per capita (Year 2000 dollars): $52,683
Detail: Germany's economy will remain the largest in Europe, out-producing the U.K. even though the two nations will have virtually the same population size. However, the number of people living in Germany is expected to tumble by 24% as the U.K. grows
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31. Pakistan
Size of Economy (Year 2000 dollars): $675 billion
Income per capita (Year 2000 dollars): $2,455
Detail: Though Pakistan has recently been at odds with the U.S., the country remains one of its largest trading partners. Pakistan is a strong textile producer.
These Economies Will Dominate The World In 2050 - Business Insider