Finding the Fourth Proportional to 400,959, 553,323.42 and 222,111

Step by Step Solution

1. Step 1: Write the proportion equation
   400,959 : 553,323.42 = 222,111 : x
2. Step 2: Convert to fraction form
   400,959/553,323.42 = 222,111/x
3. Step 3: Cross multiply
   400,959x = 553,323.42 × 222,111
4. Step 4: Simplify right side
   400,959x = 122,899,218,139.62
5. Step 5: Solve for x
   x = 122,899,218,139.62/400,959
6. Step 6: Final answer
   x = 306,513.18