Finding the Fourth Proportional to 132,913.12, 183,434.72 and 81,915.52

Step by Step Solution

1. Step 1: Write the proportion equation
   132,913.12 : 183,434.72 = 81,915.52 : x
2. Step 2: Convert to fraction form
   132,913.12/183,434.72 = 81,915.52/x
3. Step 3: Cross multiply
   132,913.12x = 183,434.72 × 81,915.52
4. Step 4: Simplify right side
   132,913.12x = 15,026,150,474.85
5. Step 5: Solve for x
   x = 15,026,150,474.85/132,913.12
6. Step 6: Final answer
   x = 113,052.42