Finding the Fourth Proportional to 89,447.18, 123,439.37 and 49,161.96

Step by Step Solution

1. Step 1: Write the proportion equation
   89,447.18 : 123,439.37 = 49,161.96 : x
2. Step 2: Convert to fraction form
   89,447.18/123,439.37 = 49,161.96/x
3. Step 3: Cross multiply
   89,447.18x = 123,439.37 × 49,161.96
4. Step 4: Simplify right side
   89,447.18x = 6,068,521,124.56
5. Step 5: Solve for x
   x = 6,068,521,124.56/89,447.18
6. Step 6: Final answer
   x = 67,844.75