Finding the Fourth Proportional to 59.43, 89.67 and 58.18

Step by Step Solution

1. Step 1: Write the proportion equation
   59.43 : 89.67 = 58.18 : x
2. Step 2: Convert to fraction form
   59.43/89.67 = 58.18/x
3. Step 3: Cross multiply
   59.43x = 89.67 × 58.18
4. Step 4: Simplify right side
   59.43x = 5,217.00
5. Step 5: Solve for x
   x = 5,217.00/59.43
6. Step 6: Final answer
   x = 87.78