Finding the Fourth Proportional to 401,072.76, 553,480.42 and 222,224.76

Step by Step Solution

1. Step 1: Write the proportion equation
   401,072.76 : 553,480.42 = 222,224.76 : x
2. Step 2: Convert to fraction form
   401,072.76/553,480.42 = 222,224.76/x
3. Step 3: Cross multiply
   401,072.76x = 553,480.42 × 222,224.76
4. Step 4: Simplify right side
   401,072.76x = 122,997,053,499.20
5. Step 5: Solve for x
   x = 122,997,053,499.20/401,072.76
6. Step 6: Final answer
   x = 306,670.18