Finding the Fourth Proportional to 67.29, 92.82 and 42.72

Step by Step Solution

1. Step 1: Write the proportion equation
   67.29 : 92.82 = 42.72 : x
2. Step 2: Convert to fraction form
   67.29/92.82 = 42.72/x
3. Step 3: Cross multiply
   67.29x = 92.82 × 42.72
4. Step 4: Simplify right side
   67.29x = 3,965.27
5. Step 5: Solve for x
   x = 3,965.27/67.29
6. Step 6: Final answer
   x = 58.93