Step 1:
The first step to converting 487091489.42423 to a fraction is to re-write 487091489.42423 in the form p/q where p and q are both positive integers. To start with, 487091489.42423 can be written as simply 487091489.42423/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 487091489.42423, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 487091489.42423/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 487091489.42423/1 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 487091489.42423 as a fraction:
487091489/1 / 1