Finding the Fourth Proportional to 132,580.40, 182,959.71 and 72,151.10

Step by Step Solution

1. Step 1: Write the proportion equation
   132,580.40 : 182,959.71 = 72,151.10 : x
2. Step 2: Convert to fraction form
   132,580.40/182,959.71 = 72,151.10/x
3. Step 3: Cross multiply
   132,580.40x = 182,959.71 × 72,151.10
4. Step 4: Simplify right side
   132,580.40x = 13,200,745,267.91
5. Step 5: Solve for x
   x = 13,200,745,267.91/132,580.40
6. Step 6: Final answer
   x = 99,567.85