Finding the Fourth Proportional to 298,621, 412,096.98 and 164,485

Step by Step Solution

1. Step 1: Write the proportion equation
   298,621 : 412,096.98 = 164,485 : x
2. Step 2: Convert to fraction form
   298,621/412,096.98 = 164,485/x
3. Step 3: Cross multiply
   298,621x = 412,096.98 × 164,485
4. Step 4: Simplify right side
   298,621x = 67,783,771,755.30
5. Step 5: Solve for x
   x = 67,783,771,755.30/298,621
6. Step 6: Final answer
   x = 226,989.30