Finding the Fourth Proportional to 117,123.98, 175,726.67 and 85,133.03

Step by Step Solution

1. Step 1: Write the proportion equation
   117,123.98 : 175,726.67 = 85,133.03 : x
2. Step 2: Convert to fraction form
   117,123.98/175,726.67 = 85,133.03/x
3. Step 3: Cross multiply
   117,123.98x = 175,726.67 × 85,133.03
4. Step 4: Simplify right side
   117,123.98x = 14,960,142,564.61
5. Step 5: Solve for x
   x = 14,960,142,564.61/117,123.98
6. Step 6: Final answer
   x = 127,729.12