Finding the Fourth Proportional to 50.12, 69.12 and 42.42

Step by Step Solution

1. Step 1: Write the proportion equation
   50.12 : 69.12 = 42.42 : x
2. Step 2: Convert to fraction form
   50.12/69.12 = 42.42/x
3. Step 3: Cross multiply
   50.12x = 69.12 × 42.42
4. Step 4: Simplify right side
   50.12x = 2,932.07
5. Step 5: Solve for x
   x = 2,932.07/50.12
6. Step 6: Final answer
   x = 58.50