Finding the Fourth Proportional to 456,131.86, 684,309.06 and 321,458.42

Step by Step Solution

1. Step 1: Write the proportion equation
   456,131.86 : 684,309.06 = 321,458.42 : x
2. Step 2: Convert to fraction form
   456,131.86/684,309.06 = 321,458.42/x
3. Step 3: Cross multiply
   456,131.86x = 684,309.06 × 321,458.42
4. Step 4: Simplify right side
   456,131.86x = 219,976,910,930.06
5. Step 5: Solve for x
   x = 219,976,910,930.06/456,131.86
6. Step 6: Final answer
   x = 482,266.05