Finding the Fourth Proportional to 89,440.50, 123,430.04 and 49,158.10

Step by Step Solution

1. Step 1: Write the proportion equation
   89,440.50 : 123,430.04 = 49,158.10 : x
2. Step 2: Convert to fraction form
   89,440.50/123,430.04 = 49,158.10/x
3. Step 3: Cross multiply
   89,440.50x = 123,430.04 × 49,158.10
4. Step 4: Simplify right side
   89,440.50x = 6,067,586,249.32
5. Step 5: Solve for x
   x = 6,067,586,249.32/89,440.50
6. Step 6: Final answer
   x = 67,839.36