Finding the Fourth Proportional to 82.00, 122.92 and 43.45

Step by Step Solution

1. Step 1: Write the proportion equation
   82.00 : 122.92 = 43.45 : x
2. Step 2: Convert to fraction form
   82.00/122.92 = 43.45/x
3. Step 3: Cross multiply
   82.00x = 122.92 × 43.45
4. Step 4: Simplify right side
   82.00x = 5,341.15
5. Step 5: Solve for x
   x = 5,341.15/82.00
6. Step 6: Final answer
   x = 65.14