Finding the Fourth Proportional to 89,680.32, 134,520.42 and 42,284.34

Step by Step Solution

1. Step 1: Write the proportion equation
   89,680.32 : 134,520.42 = 42,284.34 : x
2. Step 2: Convert to fraction form
   89,680.32/134,520.42 = 42,284.34/x
3. Step 3: Cross multiply
   89,680.32x = 134,520.42 × 42,284.34
4. Step 4: Simplify right side
   89,680.32x = 5,688,107,176.22
5. Step 5: Solve for x
   x = 5,688,107,176.22/89,680.32
6. Step 6: Final answer
   x = 63,426.48