Step 1:
The first step to converting 51751.819821426 to a fraction is to re-write 51751.819821426 in the form p/q where p and q are both positive integers. To start with, 51751.819821426 can be written as simply 51751.819821426/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 51751.819821426, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 51751.819821426/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 51751.819821426/1 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 51751.819821426 as a fraction:
258759/5 / 1