Finding the Fourth Proportional to 86.67, 119.50 and 59.00

Step by Step Solution

1. Step 1: Write the proportion equation
   86.67 : 119.50 = 59.00 : x
2. Step 2: Convert to fraction form
   86.67/119.50 = 59.00/x
3. Step 3: Cross multiply
   86.67x = 119.50 × 59.00
4. Step 4: Simplify right side
   86.67x = 7,049.76
5. Step 5: Solve for x
   x = 7,049.76/86.67
6. Step 6: Final answer
   x = 81.34