Finding the Fourth Proportional to 89,411.92, 123,388.52 and 49,128.28

Step by Step Solution

1. Step 1: Write the proportion equation
   89,411.92 : 123,388.52 = 49,128.28 : x
2. Step 2: Convert to fraction form
   89,411.92/123,388.52 = 49,128.28/x
3. Step 3: Cross multiply
   89,411.92x = 123,388.52 × 49,128.28
4. Step 4: Simplify right side
   89,411.92x = 6,061,865,759.35
5. Step 5: Solve for x
   x = 6,061,865,759.35/89,411.92
6. Step 6: Final answer
   x = 67,797.07