Finding the Fourth Proportional to 89,840.52, 123,978.92 and 49,555.98

Step by Step Solution

1. Step 1: Write the proportion equation
   89,840.52 : 123,978.92 = 49,555.98 : x
2. Step 2: Convert to fraction form
   89,840.52/123,978.92 = 49,555.98/x
3. Step 3: Cross multiply
   89,840.52x = 123,978.92 × 49,555.98
4. Step 4: Simplify right side
   89,840.52x = 6,143,896,879.94
5. Step 5: Solve for x
   x = 6,143,896,879.94/89,840.52
6. Step 6: Final answer
   x = 68,386.70