Finding the Fourth Proportional to 116.41, 160.61 and 67.28

Step by Step Solution

1. Step 1: Write the proportion equation
   116.41 : 160.61 = 67.28 : x
2. Step 2: Convert to fraction form
   116.41/160.61 = 67.28/x
3. Step 3: Cross multiply
   116.41x = 160.61 × 67.28
4. Step 4: Simplify right side
   116.41x = 10,805.79
5. Step 5: Solve for x
   x = 10,805.79/116.41
6. Step 6: Final answer
   x = 92.82