Finding the Fourth Proportional to 383,419.98, 529,111.24 and 222,270.89

Step by Step Solution

1. Step 1: Write the proportion equation
   383,419.98 : 529,111.24 = 222,270.89 : x
2. Step 2: Convert to fraction form
   383,419.98/529,111.24 = 222,270.89/x
3. Step 3: Cross multiply
   383,419.98x = 529,111.24 × 222,270.89
4. Step 4: Simplify right side
   383,419.98x = 117,606,023,022.57
5. Step 5: Solve for x
   x = 117,606,023,022.57/383,419.98
6. Step 6: Final answer
   x = 306,728.99