Finding the Fourth Proportional to 59.46, 82.02 and 42.18

Step by Step Solution

1. Step 1: Write the proportion equation
   59.46 : 82.02 = 42.18 : x
2. Step 2: Convert to fraction form
   59.46/82.02 = 42.18/x
3. Step 3: Cross multiply
   59.46x = 82.02 × 42.18
4. Step 4: Simplify right side
   59.46x = 3,459.60
5. Step 5: Solve for x
   x = 3,459.60/59.46
6. Step 6: Final answer
   x = 58.18