Finding the Fourth Proportional to 87,436.94, 120,658.71 and 49,710.38

Step by Step Solution

1. Step 1: Write the proportion equation
   87,436.94 : 120,658.71 = 49,710.38 : x
2. Step 2: Convert to fraction form
   87,436.94/120,658.71 = 49,710.38/x
3. Step 3: Cross multiply
   87,436.94x = 120,658.71 × 49,710.38
4. Step 4: Simplify right side
   87,436.94x = 5,997,990,324.41
5. Step 5: Solve for x
   x = 5,997,990,324.41/87,436.94
6. Step 6: Final answer
   x = 68,597.90