Finding the Fourth Proportional to 298,483.42, 411,936.15 and 222,900.70

Step by Step Solution

1. Step 1: Write the proportion equation
   298,483.42 : 411,936.15 = 222,900.70 : x
2. Step 2: Convert to fraction form
   298,483.42/411,936.15 = 222,900.70/x
3. Step 3: Cross multiply
   298,483.42x = 411,936.15 × 222,900.70
4. Step 4: Simplify right side
   298,483.42x = 91,820,856,190.31
5. Step 5: Solve for x
   x = 91,820,856,190.31/298,483.42
6. Step 6: Final answer
   x = 307,624.65