I say put a word into the ear of the richer one that he would be blessed to share his equal inheritance with his less well-off brother. Who knows, maybe the wealthy one is already sharing with his brother.
that would help with his mortage and other bills now when he needs it....then split the money when you die.
He already is 'sharing' with his brother:
The rich guy is funding his own retirement, the teacher is funding his retirement with money confiscated from his rich brother through taxes.
The rich guy is funding his own health insurance, the teacher is funding his health insurance with money confiscated from his rich brother through taxes.
The rich guy is paying a far greater percentage of his earned income in taxes than his teacher brother is. The teacher brother is receiving a far greater share of tax money than the rich brother. For example: Some of those tax moneys from the rich brother go to build the teachers offices, while the rich guy has to help pay for his own offices through his own hard work.
I'll wager I could list a hundred different ways the rich guy is 'sharing' with his teacher brother, and most of them are at the point of a gun.
bump for later
Based on the experiences of my Dad and his three siblings when Grandma died, the one who had the highest income incl. substantial property, was the one who nitpicked loudest over every dime of the estate. The only thing they divided without rancor was the towels.