Finding the Fourth Proportional to 298,280.81, 411,627.59 and 164,144.81

Step by Step Solution

1. Step 1: Write the proportion equation
   298,280.81 : 411,627.59 = 164,144.81 : x
2. Step 2: Convert to fraction form
   298,280.81/411,627.59 = 164,144.81/x
3. Step 3: Cross multiply
   298,280.81x = 411,627.59 × 164,144.81
4. Step 4: Simplify right side
   298,280.81x = 67,566,533,375.20
5. Step 5: Solve for x
   x = 67,566,533,375.20/298,280.81
6. Step 6: Final answer
   x = 226,519.88