Finding the Fourth Proportional to 59.42, 88.59 and 58.05

Step by Step Solution

1. Step 1: Write the proportion equation
   59.42 : 88.59 = 58.05 : x
2. Step 2: Convert to fraction form
   59.42/88.59 = 58.05/x
3. Step 3: Cross multiply
   59.42x = 88.59 × 58.05
4. Step 4: Simplify right side
   59.42x = 5,142.65
5. Step 5: Solve for x
   x = 5,142.65/59.42
6. Step 6: Final answer
   x = 86.55