Finding the Fourth Proportional to 50.24, 69.30 and 42.16

Step by Step Solution

1. Step 1: Write the proportion equation
   50.24 : 69.30 = 42.16 : x
2. Step 2: Convert to fraction form
   50.24/69.30 = 42.16/x
3. Step 3: Cross multiply
   50.24x = 69.30 × 42.16
4. Step 4: Simplify right side
   50.24x = 2,921.69
5. Step 5: Solve for x
   x = 2,921.69/50.24
6. Step 6: Final answer
   x = 58.15