Finding the Fourth Proportional to 94.82, 142.31 and 64.42

Step by Step Solution

1. Step 1: Write the proportion equation
   94.82 : 142.31 = 64.42 : x
2. Step 2: Convert to fraction form
   94.82/142.31 = 64.42/x
3. Step 3: Cross multiply
   94.82x = 142.31 × 64.42
4. Step 4: Simplify right side
   94.82x = 9,167.42
5. Step 5: Solve for x
   x = 9,167.42/94.82
6. Step 6: Final answer
   x = 96.69