Finding the Fourth Proportional to 59.42, 81.96 and 42.14

Step by Step Solution

1. Step 1: Write the proportion equation
   59.42 : 81.96 = 42.14 : x
2. Step 2: Convert to fraction form
   59.42/81.96 = 42.14/x
3. Step 3: Cross multiply
   59.42x = 81.96 × 42.14
4. Step 4: Simplify right side
   59.42x = 3,453.79
5. Step 5: Solve for x
   x = 3,453.79/59.42
6. Step 6: Final answer
   x = 58.13