Finding the Fourth Proportional to 89,814.18, 123,951.86 and 51,578.74

Step by Step Solution

1. Step 1: Write the proportion equation
   89,814.18 : 123,951.86 = 51,578.74 : x
2. Step 2: Convert to fraction form
   89,814.18/123,951.86 = 51,578.74/x
3. Step 3: Cross multiply
   89,814.18x = 123,951.86 × 51,578.74
4. Step 4: Simplify right side
   89,814.18x = 6,393,280,759.46
5. Step 5: Solve for x
   x = 6,393,280,759.46/89,814.18
6. Step 6: Final answer
   x = 71,183.42