Finding the Fourth Proportional to 118,017.57, 176,854.64 and 72,942.69

Step by Step Solution

1. Step 1: Write the proportion equation
   118,017.57 : 176,854.64 = 72,942.69 : x
2. Step 2: Convert to fraction form
   118,017.57/176,854.64 = 72,942.69/x
3. Step 3: Cross multiply
   118,017.57x = 176,854.64 × 72,942.69
4. Step 4: Simplify right side
   118,017.57x = 12,900,253,180.58
5. Step 5: Solve for x
   x = 12,900,253,180.58/118,017.57
6. Step 6: Final answer
   x = 109,307.90