Finding the Fourth Proportional to 89,446.91, 123,439.10 and 49,161.74

Step by Step Solution

1. Step 1: Write the proportion equation
   89,446.91 : 123,439.10 = 49,161.74 : x
2. Step 2: Convert to fraction form
   89,446.91/123,439.10 = 49,161.74/x
3. Step 3: Cross multiply
   89,446.91x = 123,439.10 × 49,161.74
4. Step 4: Simplify right side
   89,446.91x = 6,068,480,077.03
5. Step 5: Solve for x
   x = 6,068,480,077.03/89,446.91
6. Step 6: Final answer
   x = 67,844.49