Finding the Fourth Proportional to 118,158.59, 163,085.33 and 75,129.77

Step by Step Solution

1. Step 1: Write the proportion equation
   118,158.59 : 163,085.33 = 75,129.77 : x
2. Step 2: Convert to fraction form
   118,158.59/163,085.33 = 75,129.77/x
3. Step 3: Cross multiply
   118,158.59x = 163,085.33 × 75,129.77
4. Step 4: Simplify right side
   118,158.59x = 12,252,563,333.27
5. Step 5: Solve for x
   x = 12,252,563,333.27/118,158.59
6. Step 6: Final answer
   x = 103,695.92