Finding the Fourth Proportional to 222,906.72, 307,596.24 and 122,311.20

Step by Step Solution

1. Step 1: Write the proportion equation
   222,906.72 : 307,596.24 = 122,311.20 : x
2. Step 2: Convert to fraction form
   222,906.72/307,596.24 = 122,311.20/x
3. Step 3: Cross multiply
   222,906.72x = 307,596.24 × 122,311.20
4. Step 4: Simplify right side
   222,906.72x = 37,622,465,229.89
5. Step 5: Solve for x
   x = 37,622,465,229.89/222,906.72
6. Step 6: Final answer
   x = 168,781.21