Finding the Fourth Proportional to 289,499.86, 433,608.18 and 222,446.42

Step by Step Solution

1. Step 1: Write the proportion equation
   289,499.86 : 433,608.18 = 222,446.42 : x
2. Step 2: Convert to fraction form
   289,499.86/433,608.18 = 222,446.42/x
3. Step 3: Cross multiply
   289,499.86x = 433,608.18 × 222,446.42
4. Step 4: Simplify right side
   289,499.86x = 96,454,587,323.72
5. Step 5: Solve for x
   x = 96,454,587,323.72/289,499.86
6. Step 6: Final answer
   x = 333,176.63