Finding the Fourth Proportional to 87,380.05, 120,583.32 and 49,139.59

Step by Step Solution

1. Step 1: Write the proportion equation
   87,380.05 : 120,583.32 = 49,139.59 : x
2. Step 2: Convert to fraction form
   87,380.05/120,583.32 = 49,139.59/x
3. Step 3: Cross multiply
   87,380.05x = 120,583.32 × 49,139.59
4. Step 4: Simplify right side
   87,380.05x = 5,925,414,285.95
5. Step 5: Solve for x
   x = 5,925,414,285.95/87,380.05
6. Step 6: Final answer
   x = 67,811.98