Why would both switches on a 3-way switch fail simultaneously?
I wouldn't pay too much attention to the 92V unless there is some true current (amperage) running through it as it might be trace voltage. 


This diagram belongs to do-it-yourself-help.com. The original can be found here: https://www.do-it-yourself-help.com/3_way_switch_wiring.html

You need to find the source voltage and confirm you have power there. In the image above it is sourcing from one of the three way switches and it will always terminate there. That's where I would start looking, try and find the source voltage of 120V and start working from there. The other common is always the switch leg. Then you have the two carriers.

I know this sounds stupid but did you check the breaker and made sure you had power to the switches? Most of the time failure is at the weakest points. That would be splices and connections and the switches themselves. So go through and check all splices, connections and switches one at a time. Switches do break so look for actions that feel broken or are making noises like something is loose or broke free. Normally switches do not go bad together but even one going bad could stop the lights from working. The good news is that it is rare for the problem would be in the light fixtures, but that doesn't rule them out. It would just be the last place I would look.