Finding the Fourth Proportional to 298,493.44, 411,949.98 and 222,910.72

Step by Step Solution

1. Step 1: Write the proportion equation
   298,493.44 : 411,949.98 = 222,910.72 : x
2. Step 2: Convert to fraction form
   298,493.44/411,949.98 = 222,910.72/x
3. Step 3: Cross multiply
   298,493.44x = 411,949.98 × 222,910.72
4. Step 4: Simplify right side
   298,493.44x = 91,828,066,645.79
5. Step 5: Solve for x
   x = 91,828,066,645.79/298,493.44
6. Step 6: Final answer
   x = 307,638.47