Finding the Fourth Proportional to 89,515.32, 123,531.47 and 49,231.59

Step by Step Solution

1. Step 1: Write the proportion equation
   89,515.32 : 123,531.47 = 49,231.59 : x
2. Step 2: Convert to fraction form
   89,515.32/123,531.47 = 49,231.59/x
3. Step 3: Cross multiply
   89,515.32x = 123,531.47 × 49,231.59
4. Step 4: Simplify right side
   89,515.32x = 6,081,650,436.98
5. Step 5: Solve for x
   x = 6,081,650,436.98/89,515.32
6. Step 6: Final answer
   x = 67,939.77