Finding the Fourth Proportional to 401,221, 553,684.98 and 222,373

Step by Step Solution

1. Step 1: Write the proportion equation
   401,221 : 553,684.98 = 222,373 : x
2. Step 2: Convert to fraction form
   401,221/553,684.98 = 222,373/x
3. Step 3: Cross multiply
   401,221x = 553,684.98 × 222,373
4. Step 4: Simplify right side
   401,221x = 123,124,590,057.54
5. Step 5: Solve for x
   x = 123,124,590,057.54/401,221
6. Step 6: Final answer
   x = 306,874.74