Finding the Fourth Proportional to 89,617.32, 123,671.89 and 48,781.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89,617.32 : 123,671.89 = 48,781.60 : x
2. Step 2: Convert to fraction form
   89,617.32/123,671.89 = 48,781.60/x
3. Step 3: Cross multiply
   89,617.32x = 123,671.89 × 48,781.60
4. Step 4: Simplify right side
   89,617.32x = 6,032,912,425.32
5. Step 5: Solve for x
   x = 6,032,912,425.32/89,617.32
6. Step 6: Final answer
   x = 67,318.60