Finding the Fourth Proportional to 62.82, 86.67 and 61.25

Step by Step Solution

1. Step 1: Write the proportion equation
   62.82 : 86.67 = 61.25 : x
2. Step 2: Convert to fraction form
   62.82/86.67 = 61.25/x
3. Step 3: Cross multiply
   62.82x = 86.67 × 61.25
4. Step 4: Simplify right side
   62.82x = 5,308.10
5. Step 5: Solve for x
   x = 5,308.10/62.82
6. Step 6: Final answer
   x = 84.50