Finding the Fourth Proportional to 82,731.04, 123,160.85 and 82,238.97

Step by Step Solution

1. Step 1: Write the proportion equation
   82,731.04 : 123,160.85 = 82,238.97 : x
2. Step 2: Convert to fraction form
   82,731.04/123,160.85 = 82,238.97/x
3. Step 3: Cross multiply
   82,731.04x = 123,160.85 × 82,238.97
4. Step 4: Simplify right side
   82,731.04x = 10,128,621,448.32
5. Step 5: Solve for x
   x = 10,128,621,448.32/82,731.04
6. Step 6: Final answer
   x = 122,428.31