Finding the Fourth Proportional to 59.99, 82.78 and 35.42

Step by Step Solution

1. Step 1: Write the proportion equation
   59.99 : 82.78 = 35.42 : x
2. Step 2: Convert to fraction form
   59.99/82.78 = 35.42/x
3. Step 3: Cross multiply
   59.99x = 82.78 × 35.42
4. Step 4: Simplify right side
   59.99x = 2,931.57
5. Step 5: Solve for x
   x = 2,931.57/59.99
6. Step 6: Final answer
   x = 48.87