Finding the Fourth Proportional to 113,868.72, 157,126.91 and 66,112.74

Step by Step Solution

1. Step 1: Write the proportion equation
   113,868.72 : 157,126.91 = 66,112.74 : x
2. Step 2: Convert to fraction form
   113,868.72/157,126.91 = 66,112.74/x
3. Step 3: Cross multiply
   113,868.72x = 157,126.91 × 66,112.74
4. Step 4: Simplify right side
   113,868.72x = 10,388,090,217.27
5. Step 5: Solve for x
   x = 10,388,090,217.27/113,868.72
6. Step 6: Final answer
   x = 91,228.66