Finding the Fourth Proportional to 50.40, 69.37 and 42.71

Step by Step Solution

1. Step 1: Write the proportion equation
   50.40 : 69.37 = 42.71 : x
2. Step 2: Convert to fraction form
   50.40/69.37 = 42.71/x
3. Step 3: Cross multiply
   50.40x = 69.37 × 42.71
4. Step 4: Simplify right side
   50.40x = 2,962.34
5. Step 5: Solve for x
   x = 2,962.34/50.40
6. Step 6: Final answer
   x = 58.78