Finding the Fourth Proportional to 42.69, 63.55 and 42.46

Step by Step Solution

1. Step 1: Write the proportion equation
   42.69 : 63.55 = 42.46 : x
2. Step 2: Convert to fraction form
   42.69/63.55 = 42.46/x
3. Step 3: Cross multiply
   42.69x = 63.55 × 42.46
4. Step 4: Simplify right side
   42.69x = 2,697.99
5. Step 5: Solve for x
   x = 2,697.99/42.69
6. Step 6: Final answer
   x = 63.20