Step 1:
The first step to converting 100620.7980317 to a fraction is to re-write 100620.7980317 in the form p/q where p and q are both positive integers. To start with, 100620.7980317 can be written as simply 100620.7980317/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 100620.7980317, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 100620.7980317/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 100620.7980317/1 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 100620.7980317 as a fraction:
402483/4 / 1