Step 1:
The first step to converting 172000516.76439 to a fraction is to re-write 172000516.76439 in the form p/q where p and q are both positive integers. To start with, 172000516.76439 can be written as simply 172000516.76439/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 172000516.76439, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 172000516.76439/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 172000516.76439/1 each by 100000:
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 172000516.76439 as a fraction:
172000516/1 / 1