Finding the Fourth Proportional to 383,147.72, 528,743.76 and 222,096.24

Step by Step Solution

1. Step 1: Write the proportion equation
   383,147.72 : 528,743.76 = 222,096.24 : x
2. Step 2: Convert to fraction form
   383,147.72/528,743.76 = 222,096.24/x
3. Step 3: Cross multiply
   383,147.72x = 528,743.76 × 222,096.24
4. Step 4: Simplify right side
   383,147.72x = 117,432,001,019.46
5. Step 5: Solve for x
   x = 117,432,001,019.46/383,147.72
6. Step 6: Final answer
   x = 306,492.76