Finding the Fourth Proportional to 63.01, 86.69 and 62.87

Step by Step Solution

1. Step 1: Write the proportion equation
   63.01 : 86.69 = 62.87 : x
2. Step 2: Convert to fraction form
   63.01/86.69 = 62.87/x
3. Step 3: Cross multiply
   63.01x = 86.69 × 62.87
4. Step 4: Simplify right side
   63.01x = 5,449.89
5. Step 5: Solve for x
   x = 5,449.89/63.01
6. Step 6: Final answer
   x = 86.50