Finding the Fourth Proportional to 87,423.18, 120,643.83 and 49,182.77

Step by Step Solution

1. Step 1: Write the proportion equation
   87,423.18 : 120,643.83 = 49,182.77 : x
2. Step 2: Convert to fraction form
   87,423.18/120,643.83 = 49,182.77/x
3. Step 3: Cross multiply
   87,423.18x = 120,643.83 × 49,182.77
4. Step 4: Simplify right side
   87,423.18x = 5,933,597,139.59
5. Step 5: Solve for x
   x = 5,933,597,139.59/87,423.18
6. Step 6: Final answer
   x = 67,872.13