Finding the Fourth Proportional to 312,436.09, 431,162.22 and 169,196.37

Step by Step Solution

1. Step 1: Write the proportion equation
   312,436.09 : 431,162.22 = 169,196.37 : x
2. Step 2: Convert to fraction form
   312,436.09/431,162.22 = 169,196.37/x
3. Step 3: Cross multiply
   312,436.09x = 431,162.22 × 169,196.37
4. Step 4: Simplify right side
   312,436.09x = 72,951,082,505.14
5. Step 5: Solve for x
   x = 72,951,082,505.14/312,436.09
6. Step 6: Final answer
   x = 233,491.22