Finding the Fourth Proportional to 403,445.56, 556,732.82 and 222,123.06

Step by Step Solution

1. Step 1: Write the proportion equation
   403,445.56 : 556,732.82 = 222,123.06 : x
2. Step 2: Convert to fraction form
   403,445.56/556,732.82 = 222,123.06/x
3. Step 3: Cross multiply
   403,445.56x = 556,732.82 × 222,123.06
4. Step 4: Simplify right side
   403,445.56x = 123,663,197,580.83
5. Step 5: Solve for x
   x = 123,663,197,580.83/403,445.56
6. Step 6: Final answer
   x = 306,517.68