Finding the Fourth Proportional to 132,039.88, 182,238.32 and 78,354.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,039.88 : 182,238.32 = 78,354.50 : x
2. Step 2: Convert to fraction form
   132,039.88/182,238.32 = 78,354.50/x
3. Step 3: Cross multiply
   132,039.88x = 182,238.32 × 78,354.50
4. Step 4: Simplify right side
   132,039.88x = 14,279,191,729.13
5. Step 5: Solve for x
   x = 14,279,191,729.13/132,039.88
6. Step 6: Final answer
   x = 108,143.02