Finding the Fourth Proportional to 89,432.88, 123,409.35 and 49,146.18

Step by Step Solution

1. Step 1: Write the proportion equation
   89,432.88 : 123,409.35 = 49,146.18 : x
2. Step 2: Convert to fraction form
   89,432.88/123,409.35 = 49,146.18/x
3. Step 3: Cross multiply
   89,432.88x = 123,409.35 × 49,146.18
4. Step 4: Simplify right side
   89,432.88x = 6,065,098,128.78
5. Step 5: Solve for x
   x = 6,065,098,128.78/89,432.88
6. Step 6: Final answer
   x = 67,817.32