Solving for an exponential variable (x) of e

Not sure if this would be able to be solved using solver, having trouble, help greatlyy appreciated

97.5=100e^(-x(1/4))

How would I solve for this using excel. Answer= 0.10127


97.5=100e^(-x(1/4))

(divided by 100 both sides, mult by -4)

-4* ln(97.5/100)=-x(1/4) *-4

This is for determing continuously compounded zero rates

Bond price= Bond principle (e)^r(t)

I do not understand the "-x" part of "100e^(-x(1/4))"

is it e^(-1/4) ??

or

is it e^(-X*(1/4)) where X is an input variable ??

Ok, you are solving for X. This is more a math question than an Excel issue.