Finding the Fourth Proportional to 86.83, 119.83 and 47.49

Step by Step Solution

1. Step 1: Write the proportion equation
   86.83 : 119.83 = 47.49 : x
2. Step 2: Convert to fraction form
   86.83/119.83 = 47.49/x
3. Step 3: Cross multiply
   86.83x = 119.83 × 47.49
4. Step 4: Simplify right side
   86.83x = 5,689.89
5. Step 5: Solve for x
   x = 5,689.89/86.83
6. Step 6: Final answer
   x = 65.53