Finding the Fourth Proportional to 59.99, 89.99 and 19.42

Step by Step Solution

1. Step 1: Write the proportion equation
   59.99 : 89.99 = 19.42 : x
2. Step 2: Convert to fraction form
   59.99/89.99 = 19.42/x
3. Step 3: Cross multiply
   59.99x = 89.99 × 19.42
4. Step 4: Simplify right side
   59.99x = 1,747.61
5. Step 5: Solve for x
   x = 1,747.61/59.99
6. Step 6: Final answer
   x = 29.13