Step 1:
The first step to converting 159941.2131561 to a fraction is to re-write 159941.2131561 in the form p/q where p and q are both positive integers. To start with, 159941.2131561 can be written as simply 159941.2131561/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 159941.2131561, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 159941.2131561/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 159941.2131561/1 each by 10000000:
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 159941.2131561 as a fraction:
639765/4 / 1