Step 1:
The first step to converting 39290.500068888 to a fraction is to re-write 39290.500068888 in the form p/q where p and q are both positive integers. To start with, 39290.500068888 can be written as simply 39290.500068888/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 39290.500068888, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 39290.500068888/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 39290.500068888/1 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 39290.500068888 as a fraction:
78581/2 / 1