Finding the Fourth Proportional to 50.52, 69.76 and 50.42

Step by Step Solution

1. Step 1: Write the proportion equation
   50.52 : 69.76 = 50.42 : x
2. Step 2: Convert to fraction form
   50.52/69.76 = 50.42/x
3. Step 3: Cross multiply
   50.52x = 69.76 × 50.42
4. Step 4: Simplify right side
   50.52x = 3,517.54
5. Step 5: Solve for x
   x = 3,517.54/50.52
6. Step 6: Final answer
   x = 69.62