Step 1:
The first step to converting 57090.908403369 to a fraction is to re-write 57090.908403369 in the form p/q where p and q are both positive integers. To start with, 57090.908403369 can be written as simply 57090.908403369/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 57090.908403369, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 57090.908403369/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 57090.908403369/1 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 57090.908403369 as a fraction:
570909/10 / 1