Need weight verification Please!

This is not the only place I have asked this question. I have also asked people who carry heavy loads and that obviously understand these trucks better than most. And most of the heavy haulers that know these trucks say yes it is heavy but the truck can handle it. For those that say do the math, show me a formula or an online calculator that will give me the numbers to prove who is right or wrong. I have searched and searched and can not find one. I understand your caution and frustration, but there seems to be a lot of confusion on the 5th wheel hitch weight towing capacities of trucks. Most don't know and just buy a bigger truck as a precaution. As I have understood it for years, once you go to a triple axle, you have to have a dully. Yes weight still has a factor in all this. So please provide me with some documentation to prove me and others wrong. Again, thank you all for your input. As much as you think I have ignored it, I did take it into consideration.