Step 1:
The first step to converting 168921540.3919 to a fraction is to re-write 168921540.3919 in the form p/q where p and q are both positive integers. To start with, 168921540.3919 can be written as simply 168921540.3919/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 168921540.3919, which in this case is 4. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 168921540.3919/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 168921540.3919/1 each by 10000:
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 168921540.3919 as a fraction:
168921540/1 / 1