Finding the Fourth Proportional to 272,017.30, 408,083.55 and 82,462.10

Step by Step Solution

1. Step 1: Write the proportion equation
   272,017.30 : 408,083.55 = 82,462.10 : x
2. Step 2: Convert to fraction form
   272,017.30/408,083.55 = 82,462.10/x
3. Step 3: Cross multiply
   272,017.30x = 408,083.55 × 82,462.10
4. Step 4: Simplify right side
   272,017.30x = 33,651,426,508.46
5. Step 5: Solve for x
   x = 33,651,426,508.46/272,017.30
6. Step 6: Final answer
   x = 123,710.61