Finding the Fourth Proportional to 118,411.88, 163,540.82 and 91,876.28

Step by Step Solution

1. Step 1: Write the proportion equation
   118,411.88 : 163,540.82 = 91,876.28 : x
2. Step 2: Convert to fraction form
   118,411.88/163,540.82 = 91,876.28/x
3. Step 3: Cross multiply
   118,411.88x = 163,540.82 × 91,876.28
4. Step 4: Simplify right side
   118,411.88x = 15,025,521,581.74
5. Step 5: Solve for x
   x = 15,025,521,581.74/118,411.88
6. Step 6: Final answer
   x = 126,892.02