Finding the Fourth Proportional to 89,787.92, 134,652.72 and 42,395.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,787.92 : 134,652.72 = 42,395.68 : x
2. Step 2: Convert to fraction form
   89,787.92/134,652.72 = 42,395.68/x
3. Step 3: Cross multiply
   89,787.92x = 134,652.72 × 42,395.68
4. Step 4: Simplify right side
   89,787.92x = 5,708,693,628.25
5. Step 5: Solve for x
   x = 5,708,693,628.25/89,787.92
6. Step 6: Final answer
   x = 63,579.75