Finding the Fourth Proportional to 89,854.71, 123,999.50 and 49,568.57

Step by Step Solution

1. Step 1: Write the proportion equation
   89,854.71 : 123,999.50 = 49,568.57 : x
2. Step 2: Convert to fraction form
   89,854.71/123,999.50 = 49,568.57/x
3. Step 3: Cross multiply
   89,854.71x = 123,999.50 × 49,568.57
4. Step 4: Simplify right side
   89,854.71x = 6,146,477,895.72
5. Step 5: Solve for x
   x = 6,146,477,895.72/89,854.71
6. Step 6: Final answer
   x = 68,404.63