Finding the Fourth Proportional to 87,278.72, 120,443.56 and 49,550.54

Step by Step Solution

1. Step 1: Write the proportion equation
   87,278.72 : 120,443.56 = 49,550.54 : x
2. Step 2: Convert to fraction form
   87,278.72/120,443.56 = 49,550.54/x
3. Step 3: Cross multiply
   87,278.72x = 120,443.56 × 49,550.54
4. Step 4: Simplify right side
   87,278.72x = 5,968,042,711.43
5. Step 5: Solve for x
   x = 5,968,042,711.43/87,278.72
6. Step 6: Final answer
   x = 68,379.13