Finding the Fourth Proportional to 89,683.88, 123,769.35 and 49,397.61

Step by Step Solution

1. Step 1: Write the proportion equation
   89,683.88 : 123,769.35 = 49,397.61 : x
2. Step 2: Convert to fraction form
   89,683.88/123,769.35 = 49,397.61/x
3. Step 3: Cross multiply
   89,683.88x = 123,769.35 × 49,397.61
4. Step 4: Simplify right side
   89,683.88x = 6,113,910,545.39
5. Step 5: Solve for x
   x = 6,113,910,545.39/89,683.88
6. Step 6: Final answer
   x = 68,171.79