When will we see the world's first trillionaire?

The fantastic fortunes of fictional characters are being outstripped by the assets of flesh-and-blood tycoons. Should we fear this explosion of super-wealth?Every so often Forbes, the magazine closely associated with America’s corporate elite, compiles its Fictional Fifteen – a chart of the wealthiest characters in film and literature, to complement its well-known annual list of the world’s wealthiest individuals. After carefully assessing the assets of the likes of Bruce Wayne