Finding the Fourth Proportional to 87,377, 120,579.16 and 49,142.88

Step by Step Solution

1. Step 1: Write the proportion equation
   87,377 : 120,579.16 = 49,142.88 : x
2. Step 2: Convert to fraction form
   87,377/120,579.16 = 49,142.88/x
3. Step 3: Cross multiply
   87,377x = 120,579.16 × 49,142.88
4. Step 4: Simplify right side
   87,377x = 5,925,607,190.38
5. Step 5: Solve for x
   x = 5,925,607,190.38/87,377
6. Step 6: Final answer
   x = 67,816.56