Finding the Fourth Proportional to 82.43, 123.57 and 43.88

Step by Step Solution

1. Step 1: Write the proportion equation
   82.43 : 123.57 = 43.88 : x
2. Step 2: Convert to fraction form
   82.43/123.57 = 43.88/x
3. Step 3: Cross multiply
   82.43x = 123.57 × 43.88
4. Step 4: Simplify right side
   82.43x = 5,421.63
5. Step 5: Solve for x
   x = 5,421.63/82.43
6. Step 6: Final answer
   x = 65.77