Cut off his fingers and toes one oleh one. Stab him 200 times. Carve his internal organs and force feed him if he is still alive. Cut it out of his stomach again and sell it to someone for money (Can't waste stuff) Take the rest of him (eyeballs,testicles,whatever) and let the birds eat them for a meal.
Now anda have officially gotten rid of the evidence,brutally punished him for already being rich and selfish (He had it coming) and now anda can scope out his living arrangements to get the info to acquire your envied money requirements. If anyone asked what happened to him repeat the directions.
First, anda must become a skilled brain surgeon. Then anda invite him over to your house, get him drunk, cut open his head, remove a small part of his brain, and then later, slip it in his dinner. Continue to do this until he dies. The end :)