Finding the Fourth Proportional to 42.50, 63.98 and 32.45

Step by Step Solution

1. Step 1: Write the proportion equation
   42.50 : 63.98 = 32.45 : x
2. Step 2: Convert to fraction form
   42.50/63.98 = 32.45/x
3. Step 3: Cross multiply
   42.50x = 63.98 × 32.45
4. Step 4: Simplify right side
   42.50x = 2,075.91
5. Step 5: Solve for x
   x = 2,075.91/42.50
6. Step 6: Final answer
   x = 48.84