If that certain someone tweets about this being "Fake News", it may one of the very few times a statement of his might stand up to scrutiny though. Arguably, the CNN headline is incorrect.... adjusted in today's value, there are many who've had greater wealth throughout history: for example, just in the US, there's Rockefeller and Carnegie (+$300B). Augustus Caesar has been estimated to have been worth $4.6 Trillion (yes, with a Tr!); meanwhile, the wealth of Mansa Musa of Timbuktu back in the early 14th century can't be estimated, but is agreed to be far beyond experts' estimates of Augustus Caesar's.
In current times, it is believed Putin's wealth is more than Bezos' brief dalliance at the $106B mark... .