Finding the Fourth Proportional to 50.69, 69.89 and 34.31

Step by Step Solution

1. Step 1: Write the proportion equation
   50.69 : 69.89 = 34.31 : x
2. Step 2: Convert to fraction form
   50.69/69.89 = 34.31/x
3. Step 3: Cross multiply
   50.69x = 69.89 × 34.31
4. Step 4: Simplify right side
   50.69x = 2,398.19
5. Step 5: Solve for x
   x = 2,398.19/50.69
6. Step 6: Final answer
   x = 47.32