Finding the Fourth Proportional to 42.50, 63.71 and 34.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42.50 : 63.71 = 34.48 : x
2. Step 2: Convert to fraction form
   42.50/63.71 = 34.48/x
3. Step 3: Cross multiply
   42.50x = 63.71 × 34.48
4. Step 4: Simplify right side
   42.50x = 2,196.72
5. Step 5: Solve for x
   x = 2,196.72/42.50
6. Step 6: Final answer
   x = 51.69