Finding the Fourth Proportional to 406,735.31, 561,293.76 and 222,973.56

Step by Step Solution

1. Step 1: Write the proportion equation
   406,735.31 : 561,293.76 = 222,973.56 : x
2. Step 2: Convert to fraction form
   406,735.31/561,293.76 = 222,973.56/x
3. Step 3: Cross multiply
   406,735.31x = 561,293.76 × 222,973.56
4. Step 4: Simplify right side
   406,735.31x = 125,153,665,066.52
5. Step 5: Solve for x
   x = 125,153,665,066.52/406,735.31
6. Step 6: Final answer
   x = 307,702.98