Step 1:
The first step to converting 83686406.768432 to a fraction is to re-write 83686406.768432 in the form p/q where p and q are both positive integers. To start with, 83686406.768432 can be written as simply 83686406.768432/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 83686406.768432, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 83686406.768432/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 83686406.768432/1 each by 1000000:
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 83686406.768432 as a fraction:
83686406/1 / 1