Finding the Fourth Proportional to 401,343.42, 553,878.81 and 222,495.42

Step by Step Solution

1. Step 1: Write the proportion equation
   401,343.42 : 553,878.81 = 222,495.42 : x
2. Step 2: Convert to fraction form
   401,343.42/553,878.81 = 222,495.42/x
3. Step 3: Cross multiply
   401,343.42x = 553,878.81 × 222,495.42
4. Step 4: Simplify right side
   401,343.42x = 123,235,499,288.51
5. Step 5: Solve for x
   x = 123,235,499,288.51/401,343.42
6. Step 6: Final answer
   x = 307,057.48