Finding the Fourth Proportional to 82.72, 114.15 and 51.63

Step by Step Solution

1. Step 1: Write the proportion equation
   82.72 : 114.15 = 51.63 : x
2. Step 2: Convert to fraction form
   82.72/114.15 = 51.63/x
3. Step 3: Cross multiply
   82.72x = 114.15 × 51.63
4. Step 4: Simplify right side
   82.72x = 5,893.56
5. Step 5: Solve for x
   x = 5,893.56/82.72
6. Step 6: Final answer
   x = 71.25