Finding the Fourth Proportional to 82.30, 123.41 and 43.69

Step by Step Solution

1. Step 1: Write the proportion equation
   82.30 : 123.41 = 43.69 : x
2. Step 2: Convert to fraction form
   82.30/123.41 = 43.69/x
3. Step 3: Cross multiply
   82.30x = 123.41 × 43.69
4. Step 4: Simplify right side
   82.30x = 5,391.26
5. Step 5: Solve for x
   x = 5,391.26/82.30
6. Step 6: Final answer
   x = 65.51