Finding the Fourth Proportional to 321,171.09, 443,037.54 and 252,936.69

Step by Step Solution

1. Step 1: Write the proportion equation
   321,171.09 : 443,037.54 = 252,936.69 : x
2. Step 2: Convert to fraction form
   321,171.09/443,037.54 = 252,936.69/x
3. Step 3: Cross multiply
   321,171.09x = 443,037.54 × 252,936.69
4. Step 4: Simplify right side
   321,171.09x = 112,060,448,913.34
5. Step 5: Solve for x
   x = 112,060,448,913.34/321,171.09
6. Step 6: Final answer
   x = 348,912.00