Finding the Fourth Proportional to 59.99, 82.24 and 59.90

Step by Step Solution

1. Step 1: Write the proportion equation
   59.99 : 82.24 = 59.90 : x
2. Step 2: Convert to fraction form
   59.99/82.24 = 59.90/x
3. Step 3: Cross multiply
   59.99x = 82.24 × 59.90
4. Step 4: Simplify right side
   59.99x = 4,925.62
5. Step 5: Solve for x
   x = 4,925.62/59.99
6. Step 6: Final answer
   x = 82.10