The answer is 14029611541307/100000000 or 14029611541307/10^8.
Solution:
We rewrite the given decimal number as a fraction with 1 in the denominator
140296.11541307 = 140296.11541307/1
Multiplying the numerator and denominator by 10^8 to remove the 8 decimal places, we have
(140296.11541307/1) * (10^8/10^8) = 14029611541307/10^8
The greatest common factor of 14029611541307 and 10^8 does not exists, therefore
140296.11541307 = 14029611541307/10^8
