Finding the Fourth Proportional to 50.47, 69.50 and 42.27

Step by Step Solution

1. Step 1: Write the proportion equation
   50.47 : 69.50 = 42.27 : x
2. Step 2: Convert to fraction form
   50.47/69.50 = 42.27/x
3. Step 3: Cross multiply
   50.47x = 69.50 × 42.27
4. Step 4: Simplify right side
   50.47x = 2,937.38
5. Step 5: Solve for x
   x = 2,937.38/50.47
6. Step 6: Final answer
   x = 58.20