Finding the Fourth Proportional to 59.58, 82.20 and 42.12

Step by Step Solution

1. Step 1: Write the proportion equation
   59.58 : 82.20 = 42.12 : x
2. Step 2: Convert to fraction form
   59.58/82.20 = 42.12/x
3. Step 3: Cross multiply
   59.58x = 82.20 × 42.12
4. Step 4: Simplify right side
   59.58x = 3,462.26
5. Step 5: Solve for x
   x = 3,462.26/59.58
6. Step 6: Final answer
   x = 58.11