Finding the Fourth Proportional to 58.62, 80.89 and 42.05

Step by Step Solution

1. Step 1: Write the proportion equation
   58.62 : 80.89 = 42.05 : x
2. Step 2: Convert to fraction form
   58.62/80.89 = 42.05/x
3. Step 3: Cross multiply
   58.62x = 80.89 × 42.05
4. Step 4: Simplify right side
   58.62x = 3,401.42
5. Step 5: Solve for x
   x = 3,401.42/58.62
6. Step 6: Final answer
   x = 58.02