Finding the Fourth Proportional to 298,626, 412,103.88 and 164,490

Step by Step Solution

1. Step 1: Write the proportion equation
   298,626 : 412,103.88 = 164,490 : x
2. Step 2: Convert to fraction form
   298,626/412,103.88 = 164,490/x
3. Step 3: Cross multiply
   298,626x = 412,103.88 × 164,490
4. Step 4: Simplify right side
   298,626x = 67,786,967,221.20
5. Step 5: Solve for x
   x = 67,786,967,221.20/298,626
6. Step 6: Final answer
   x = 226,996.20