Finding the Fourth Proportional to 82.72, 114.29 and 72.37

Step by Step Solution

1. Step 1: Write the proportion equation
   82.72 : 114.29 = 72.37 : x
2. Step 2: Convert to fraction form
   82.72/114.29 = 72.37/x
3. Step 3: Cross multiply
   82.72x = 114.29 × 72.37
4. Step 4: Simplify right side
   82.72x = 8,271.17
5. Step 5: Solve for x
   x = 8,271.17/82.72
6. Step 6: Final answer
   x = 99.99