Finding the Fourth Proportional to 89,686.57, 123,762.71 and 49,392.69

Step by Step Solution

1. Step 1: Write the proportion equation
   89,686.57 : 123,762.71 = 49,392.69 : x
2. Step 2: Convert to fraction form
   89,686.57/123,762.71 = 49,392.69/x
3. Step 3: Cross multiply
   89,686.57x = 123,762.71 × 49,392.69
4. Step 4: Simplify right side
   89,686.57x = 6,112,972,689.04
5. Step 5: Solve for x
   x = 6,112,972,689.04/89,686.57
6. Step 6: Final answer
   x = 68,159.29