Finding the Fourth Proportional to 94.31, 141.37 and 42.96

Step by Step Solution

1. Step 1: Write the proportion equation
   94.31 : 141.37 = 42.96 : x
2. Step 2: Convert to fraction form
   94.31/141.37 = 42.96/x
3. Step 3: Cross multiply
   94.31x = 141.37 × 42.96
4. Step 4: Simplify right side
   94.31x = 6,073.15
5. Step 5: Solve for x
   x = 6,073.15/94.31
6. Step 6: Final answer
   x = 64.39