Finding the Fourth Proportional to 129,255.52, 178,389.22 and 72,677.82

Step by Step Solution

1. Step 1: Write the proportion equation
   129,255.52 : 178,389.22 = 72,677.82 : x
2. Step 2: Convert to fraction form
   129,255.52/178,389.22 = 72,677.82/x
3. Step 3: Cross multiply
   129,255.52x = 178,389.22 × 72,677.82
4. Step 4: Simplify right side
   129,255.52x = 12,964,939,621.10
5. Step 5: Solve for x
   x = 12,964,939,621.10/129,255.52
6. Step 6: Final answer
   x = 100,304.73