One day, in your setup, is 86bn (plus change). By Wikipedia data, the richest person is Jeff Bezos with 113bn. So who are the two-day-ers? Poorest of them must have almost 173bn, who are those?
> Putin and Gaddafi (before his death) have both been estimated to have 200 Billion in wealth.
This seems pretty unlikely. Putin has certainly done well being a corrupt leader, and probably has control over $200B, but I doubt he has holdings that reach anywhere near that level.
Gaddafi having that much money is a bit of a joke. It would require him having many multiples of the entire country's GDP in his own personal account. Perhaps theoretically possible, but hard to believe without better proof.
I think it's impossible to properly evaluate Putin's assets as they are not economical property in classical sense of the word. If Putin loses his power, his assets could very well be $0. If he doesn't, he probably could control a lot more than he nominally owns, and a lot of stuff he controls is owned by all kinds of figureheads. So we'd have to exclude autocrats and such from the equation - what they have isn't really what we mean as property, at least in Western world.