Finding the Fourth Proportional to 116.17, 160.31 and 67.05

Step by Step Solution

1. Step 1: Write the proportion equation
   116.17 : 160.31 = 67.05 : x
2. Step 2: Convert to fraction form
   116.17/160.31 = 67.05/x
3. Step 3: Cross multiply
   116.17x = 160.31 × 67.05
4. Step 4: Simplify right side
   116.17x = 10,748.79
5. Step 5: Solve for x
   x = 10,748.79/116.17
6. Step 6: Final answer
   x = 92.53