Yes, in aggregate the PPP GDP of China is #1, just slightly ahead of the United States, both of which are just below the European Union (which, to be fair, is like the US but with each state having more sovereignty in the federal system).
The picture is complicated by the relative populations though. Per capita, the EU is $25k, China is $13k, US is $54k, Germany is $46k, and India is only $6k. Unfortunately, the PPP calculation is very complicated and controversial so I don't really know how valid or useful these numbers are. Unless we're going for a trivial definition, it also doesn't say much about availability of luxuries, infrastructure, stability of government/economy, etc. so it's not a 1:1 mapping of wealth.