Finding the Fourth Proportional to 87,344.71, 120,536.18 and 49,620.31

Step by Step Solution

1. Step 1: Write the proportion equation
   87,344.71 : 120,536.18 = 49,620.31 : x
2. Step 2: Convert to fraction form
   87,344.71/120,536.18 = 49,620.31/x
3. Step 3: Cross multiply
   87,344.71x = 120,536.18 × 49,620.31
4. Step 4: Simplify right side
   87,344.71x = 5,981,042,617.82
5. Step 5: Solve for x
   x = 5,981,042,617.82/87,344.71
6. Step 6: Final answer
   x = 68,476.30