Step 1:
The first step to converting 168990.22786274 to a fraction is to re-write 168990.22786274 in the form p/q where p and q are both positive integers. To start with, 168990.22786274 can be written as simply 168990.22786274/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 168990.22786274, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 168990.22786274/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 168990.22786274/1 each by 100000000:
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 168990.22786274 as a fraction:
675961/4 / 1