Finding the Fourth Proportional to 82,406.10, 123,613.20 and 43,040.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82,406.10 : 123,613.20 = 43,040.10 : x
2. Step 2: Convert to fraction form
   82,406.10/123,613.20 = 43,040.10/x
3. Step 3: Cross multiply
   82,406.10x = 123,613.20 × 43,040.10
4. Step 4: Simplify right side
   82,406.10x = 5,320,324,489.32
5. Step 5: Solve for x
   x = 5,320,324,489.32/82,406.10
6. Step 6: Final answer
   x = 64,562.27