Finding the Fourth Proportional to 86.86, 119.82 and 59.23

Step by Step Solution

1. Step 1: Write the proportion equation
   86.86 : 119.82 = 59.23 : x
2. Step 2: Convert to fraction form
   86.86/119.82 = 59.23/x
3. Step 3: Cross multiply
   86.86x = 119.82 × 59.23
4. Step 4: Simplify right side
   86.86x = 7,096.94
5. Step 5: Solve for x
   x = 7,096.94/86.86
6. Step 6: Final answer
   x = 81.71