Finding the Fourth Proportional to 89,671.42, 123,787.62 and 63,846.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,671.42 : 123,787.62 = 63,846.72 : x
2. Step 2: Convert to fraction form
   89,671.42/123,787.62 = 63,846.72/x
3. Step 3: Cross multiply
   89,671.42x = 123,787.62 × 63,846.72
4. Step 4: Simplify right side
   89,671.42x = 7,903,433,513.61
5. Step 5: Solve for x
   x = 7,903,433,513.61/89,671.42
6. Step 6: Final answer
   x = 88,137.71