Finding the Fourth Proportional to 456,141.17, 684,323.34 and 321,468

Step by Step Solution

1. Step 1: Write the proportion equation
   456,141.17 : 684,323.34 = 321,468 : x
2. Step 2: Convert to fraction form
   456,141.17/684,323.34 = 321,468/x
3. Step 3: Cross multiply
   456,141.17x = 684,323.34 × 321,468
4. Step 4: Simplify right side
   456,141.17x = 219,988,055,463.12
5. Step 5: Solve for x
   x = 219,988,055,463.12/456,141.17
6. Step 6: Final answer
   x = 482,280.65