Finding the Fourth Proportional to 62.82, 86.72 and 58.72

Step by Step Solution

1. Step 1: Write the proportion equation
   62.82 : 86.72 = 58.72 : x
2. Step 2: Convert to fraction form
   62.82/86.72 = 58.72/x
3. Step 3: Cross multiply
   62.82x = 86.72 × 58.72
4. Step 4: Simplify right side
   62.82x = 5,092.20
5. Step 5: Solve for x
   x = 5,092.20/62.82
6. Step 6: Final answer
   x = 81.06