Finding the Fourth Proportional to 82.69, 114.01 and 64.32

Step by Step Solution

1. Step 1: Write the proportion equation
   82.69 : 114.01 = 64.32 : x
2. Step 2: Convert to fraction form
   82.69/114.01 = 64.32/x
3. Step 3: Cross multiply
   82.69x = 114.01 × 64.32
4. Step 4: Simplify right side
   82.69x = 7,333.12
5. Step 5: Solve for x
   x = 7,333.12/82.69
6. Step 6: Final answer
   x = 88.68