Finding the Fourth Proportional to 408,621,105.72, 563,909,035.32 and 222,994,078.56

Step by Step Solution

1. Step 1: Write the proportion equation
   408,621,105.72 : 563,909,035.32 = 222,994,078.56 : x
2. Step 2: Convert to fraction form
   408,621,105.72/563,909,035.32 = 222,994,078.56/x
3. Step 3: Cross multiply
   408,621,105.72x = 563,909,035.32 × 222,994,078.56
4. Step 4: Simplify right side
   408,621,105.72x = 125,748,375,722,841,904
5. Step 5: Solve for x
   x = 125,748,375,722,841,904/408,621,105.72
6. Step 6: Final answer
   x = 307,738,327.66