Finding the Fourth Proportional to 132,426.43, 182,823.78 and 87,235.72

Step by Step Solution

1. Step 1: Write the proportion equation
   132,426.43 : 182,823.78 = 87,235.72 : x
2. Step 2: Convert to fraction form
   132,426.43/182,823.78 = 87,235.72/x
3. Step 3: Cross multiply
   132,426.43x = 182,823.78 × 87,235.72
4. Step 4: Simplify right side
   132,426.43x = 15,948,763,951.50
5. Step 5: Solve for x
   x = 15,948,763,951.50/132,426.43
6. Step 6: Final answer
   x = 120,434.90