Finding the Fourth Proportional to 89,158.40, 133,677 and 42,416

Step by Step Solution

1. Step 1: Write the proportion equation
   89,158.40 : 133,677 = 42,416 : x
2. Step 2: Convert to fraction form
   89,158.40/133,677 = 42,416/x
3. Step 3: Cross multiply
   89,158.40x = 133,677 × 42,416
4. Step 4: Simplify right side
   89,158.40x = 5,670,043,632
5. Step 5: Solve for x
   x = 5,670,043,632/89,158.40
6. Step 6: Final answer
   x = 63,595.17