Step 1:
The first step to converting 20412997.421077 to a fraction is to re-write 20412997.421077 in the form p/q where p and q are both positive integers. To start with, 20412997.421077 can be written as simply 20412997.421077/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 20412997.421077, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 20412997.421077/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 20412997.421077/1 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 20412997.421077 as a fraction:
20412997/1 / 1