Finding the Fourth Proportional to 86.01, 118.69 and 49.17

Step by Step Solution

1. Step 1: Write the proportion equation
   86.01 : 118.69 = 49.17 : x
2. Step 2: Convert to fraction form
   86.01/118.69 = 49.17/x
3. Step 3: Cross multiply
   86.01x = 118.69 × 49.17
4. Step 4: Simplify right side
   86.01x = 5,836.59
5. Step 5: Solve for x
   x = 5,836.59/86.01
6. Step 6: Final answer
   x = 67.86