Finding the Fourth Proportional to 89,626.88, 134,468.57 and 42,240.05

Step by Step Solution

1. Step 1: Write the proportion equation
   89,626.88 : 134,468.57 = 42,240.05 : x
2. Step 2: Convert to fraction form
   89,626.88/134,468.57 = 42,240.05/x
3. Step 3: Cross multiply
   89,626.88x = 134,468.57 × 42,240.05
4. Step 4: Simplify right side
   89,626.88x = 5,679,959,120.23
5. Step 5: Solve for x
   x = 5,679,959,120.23/89,626.88
6. Step 6: Final answer
   x = 63,373.39