Step 1:
The first step to converting 102788.21054711 to a fraction is to re-write 102788.21054711 in the form p/q where p and q are both positive integers. To start with, 102788.21054711 can be written as simply 102788.21054711/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 102788.21054711, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 102788.21054711/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 102788.21054711/1 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 102788.21054711 as a fraction:
411153/4 / 1