I predicted that Brazil, Russia and China would become the world powers 15 years ago. Christianity has been spreading like wildfire in those countries.
The BRICS notation are mostly marketing jargon to sell you over price securities.
And I don't see Brazil, Russia and China becoming world power any time soon.
I don't think that $200 billion is very much in terms of influence as the US GDP is several hundred times this size. With the western world being as advanced economically as it is I don't see it loosing any meaningful amount of influence anytime soon.