Step 1:
The first step to converting 70990.988938311 to a fraction is to re-write 70990.988938311 in the form p/q where p and q are both positive integers. To start with, 70990.988938311 can be written as simply 70990.988938311/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 70990.988938311, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 70990.988938311/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 70990.988938311/1 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 70990.988938311 as a fraction:
70991/1 / 1