Finding the Fourth Proportional to 116.23, 160.61 and 83.43

Step by Step Solution

1. Step 1: Write the proportion equation
   116.23 : 160.61 = 83.43 : x
2. Step 2: Convert to fraction form
   116.23/160.61 = 83.43/x
3. Step 3: Cross multiply
   116.23x = 160.61 × 83.43
4. Step 4: Simplify right side
   116.23x = 13,399.69
5. Step 5: Solve for x
   x = 13,399.69/116.23
6. Step 6: Final answer
   x = 115.29