Step 1:
The first step to converting 40161.646818413 to a fraction is to re-write 40161.646818413 in the form p/q where p and q are both positive integers. To start with, 40161.646818413 can be written as simply 40161.646818413/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 40161.646818413, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 40161.646818413/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 40161.646818413/1 each by 1000000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 40161.646818413 as a fraction:
120485/3 / 1