Finding the Fourth Proportional to 61.43, 92.25 and 42.17

Step by Step Solution

1. Step 1: Write the proportion equation
   61.43 : 92.25 = 42.17 : x
2. Step 2: Convert to fraction form
   61.43/92.25 = 42.17/x
3. Step 3: Cross multiply
   61.43x = 92.25 × 42.17
4. Step 4: Simplify right side
   61.43x = 3,889.72
5. Step 5: Solve for x
   x = 3,889.72/61.43
6. Step 6: Final answer
   x = 63.32