Finding the Fourth Proportional to 456,066.79, 684,211.69 and 321,393.56

Step by Step Solution

1. Step 1: Write the proportion equation
   456,066.79 : 684,211.69 = 321,393.56 : x
2. Step 2: Convert to fraction form
   456,066.79/684,211.69 = 321,393.56/x
3. Step 3: Cross multiply
   456,066.79x = 684,211.69 × 321,393.56
4. Step 4: Simplify right side
   456,066.79x = 219,901,230,842.72
5. Step 5: Solve for x
   x = 219,901,230,842.72/456,066.79
6. Step 6: Final answer
   x = 482,168.92