Step 1:
The first step to converting 4068.8931861609 to a fraction is to re-write 4068.8931861609 in the form p/q where p and q are both positive integers. To start with, 4068.8931861609 can be written as simply 4068.8931861609/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 4068.8931861609, which in this case is 10. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 4068.8931861609/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 4068.8931861609/1 each by 10000000000:
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 4068.8931861609 as a fraction:
77309/19 / 1