Finding the Fourth Proportional to 87,142.48, 120,256.61 and 49,416.73

Step by Step Solution

1. Step 1: Write the proportion equation
   87,142.48 : 120,256.61 = 49,416.73 : x
2. Step 2: Convert to fraction form
   87,142.48/120,256.61 = 49,416.73/x
3. Step 3: Cross multiply
   87,142.48x = 120,256.61 × 49,416.73
4. Step 4: Simplify right side
   87,142.48x = 5,942,688,550.63
5. Step 5: Solve for x
   x = 5,942,688,550.63/87,142.48
6. Step 6: Final answer
   x = 68,195.08