Finding the Fourth Proportional to 114.71, 158.29 and 81.59

Step by Step Solution

1. Step 1: Write the proportion equation
   114.71 : 158.29 = 81.59 : x
2. Step 2: Convert to fraction form
   114.71/158.29 = 81.59/x
3. Step 3: Cross multiply
   114.71x = 158.29 × 81.59
4. Step 4: Simplify right side
   114.71x = 12,913.89
5. Step 5: Solve for x
   x = 12,913.89/114.71
6. Step 6: Final answer
   x = 112.58