Finding the Fourth Proportional to 318,225.94, 439,042.50 and 197,323.72

Step by Step Solution

1. Step 1: Write the proportion equation
   318,225.94 : 439,042.50 = 197,323.72 : x
2. Step 2: Convert to fraction form
   318,225.94/439,042.50 = 197,323.72/x
3. Step 3: Cross multiply
   318,225.94x = 439,042.50 × 197,323.72
4. Step 4: Simplify right side
   318,225.94x = 86,633,499,338.10
5. Step 5: Solve for x
   x = 86,633,499,338.10/318,225.94
6. Step 6: Final answer
   x = 272,238.96