Step 1:
The first step to converting 31422.779843772 to a fraction is to re-write 31422.779843772 in the form p/q where p and q are both positive integers. To start with, 31422.779843772 can be written as simply 31422.779843772/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 31422.779843772, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 31422.779843772/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 31422.779843772/1 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 31422.779843772 as a fraction:
125691/4 / 1