Finding the Fourth Proportional to 89,448.88, 123,431.42 and 49,162.18

Step by Step Solution

1. Step 1: Write the proportion equation
   89,448.88 : 123,431.42 = 49,162.18 : x
2. Step 2: Convert to fraction form
   89,448.88/123,431.42 = 49,162.18/x
3. Step 3: Cross multiply
   89,448.88x = 123,431.42 × 49,162.18
4. Step 4: Simplify right side
   89,448.88x = 6,068,157,687.70
5. Step 5: Solve for x
   x = 6,068,157,687.70/89,448.88
6. Step 6: Final answer
   x = 67,839.39