Finding the Fourth Proportional to 116.42, 160.32 and 109.10

Step by Step Solution

1. Step 1: Write the proportion equation
   116.42 : 160.32 = 109.10 : x
2. Step 2: Convert to fraction form
   116.42/160.32 = 109.10/x
3. Step 3: Cross multiply
   116.42x = 160.32 × 109.10
4. Step 4: Simplify right side
   116.42x = 17,490.91
5. Step 5: Solve for x
   x = 17,490.91/116.42
6. Step 6: Final answer
   x = 150.24