Finding the Fourth Proportional to 89,439.91, 123,430.04 and 49,155.10

Step by Step Solution

1. Step 1: Write the proportion equation
   89,439.91 : 123,430.04 = 49,155.10 : x
2. Step 2: Convert to fraction form
   89,439.91/123,430.04 = 49,155.10/x
3. Step 3: Cross multiply
   89,439.91x = 123,430.04 × 49,155.10
4. Step 4: Simplify right side
   89,439.91x = 6,067,215,713.43
5. Step 5: Solve for x
   x = 6,067,215,713.43/89,439.91
6. Step 6: Final answer
   x = 67,835.66