Step 1:
The first step to converting 39143290.67421 to a fraction is to re-write 39143290.67421 in the form p/q where p and q are both positive integers. To start with, 39143290.67421 can be written as simply 39143290.67421/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 39143290.67421, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 39143290.67421/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 39143290.67421/1 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 39143290.67421 as a fraction:
39143290/1 / 1