Finding the Fourth Proportional to 309,018.08, 426,409.71 and 173,033.12

Step by Step Solution

1. Step 1: Write the proportion equation
   309,018.08 : 426,409.71 = 173,033.12 : x
2. Step 2: Convert to fraction form
   309,018.08/426,409.71 = 173,033.12/x
3. Step 3: Cross multiply
   309,018.08x = 426,409.71 × 173,033.12
4. Step 4: Simplify right side
   309,018.08x = 73,783,002,519.60
5. Step 5: Solve for x
   x = 73,783,002,519.60/309,018.08
6. Step 6: Final answer
   x = 238,765.97