Finding the Fourth Proportional to 298,621.50, 412,097.67 and 164,485.50

Step by Step Solution

1. Step 1: Write the proportion equation
   298,621.50 : 412,097.67 = 164,485.50 : x
2. Step 2: Convert to fraction form
   298,621.50/412,097.67 = 164,485.50/x
3. Step 3: Cross multiply
   298,621.50x = 412,097.67 × 164,485.50
4. Step 4: Simplify right side
   298,621.50x = 67,784,091,298.79
5. Step 5: Solve for x
   x = 67,784,091,298.79/298,621.50
6. Step 6: Final answer
   x = 226,989.99