Finding the Fourth Proportional to 116.88, 160.43 and 111.87

Step by Step Solution

1. Step 1: Write the proportion equation
   116.88 : 160.43 = 111.87 : x
2. Step 2: Convert to fraction form
   116.88/160.43 = 111.87/x
3. Step 3: Cross multiply
   116.88x = 160.43 × 111.87
4. Step 4: Simplify right side
   116.88x = 17,946.29
5. Step 5: Solve for x
   x = 17,946.29/116.88
6. Step 6: Final answer
   x = 153.55