Step 1:
The first step to converting 10202191658.109 to a fraction is to re-write 10202191658.109 in the form p/q where p and q are both positive integers. To start with, 10202191658.109 can be written as simply 10202191658.109/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 10202191658.109, which in this case is 3. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 10202191658.109/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 10202191658.109/1 each by 1000:
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 10202191658.109 as a fraction:
10202191658/1 / 1