Step 1:
The first step to converting 163443648.67489 to a fraction is to re-write 163443648.67489 in the form p/q where p and q are both positive integers. To start with, 163443648.67489 can be written as simply 163443648.67489/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 163443648.67489, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 163443648.67489/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 163443648.67489/1 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 163443648.67489 as a fraction:
163443648/1 / 1