Step 1:
The first step to converting 170276.58972479 to a fraction is to re-write 170276.58972479 in the form p/q where p and q are both positive integers. To start with, 170276.58972479 can be written as simply 170276.58972479/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 170276.58972479, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 170276.58972479/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 170276.58972479/1 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 170276.58972479 as a fraction:
340553/2 / 1