It is hard to predict an exact price. However, there is a chance for a raise but I dont think 91,000 is possible. Even, if any sudden raises happen similar to that of 2017, still a raise to 91,000 is not to sure. But it is best to watch the price for another 6 months and decide.
That was like insulting bitcoin more than the speculation itself. You really need to check the starting and ending value of bitcoin for the year 2017. Then you must also look for the growth rate. May be that will give you some clear idea about the potential of this coin. If bitcoin can be worth 20k dollars within few weeks, three years is a way extra time for it to achieve the target of 90k dollars.