Finding the Fourth Proportional to 82,215.10, 123,322.65 and 82,215.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82,215.10 : 123,322.65 = 82,215.10 : x
2. Step 2: Convert to fraction form
   82,215.10/123,322.65 = 82,215.10/x
3. Step 3: Cross multiply
   82,215.10x = 123,322.65 × 82,215.10
4. Step 4: Simplify right side
   82,215.10x = 10,138,984,002.02
5. Step 5: Solve for x
   x = 10,138,984,002.02/82,215.10
6. Step 6: Final answer
   x = 123,322.65