Finding the Fourth Proportional to 312,436.52, 431,162.40 and 169,196.56

Step by Step Solution

1. Step 1: Write the proportion equation
   312,436.52 : 431,162.40 = 169,196.56 : x
2. Step 2: Convert to fraction form
   312,436.52/431,162.40 = 169,196.56/x
3. Step 3: Cross multiply
   312,436.52x = 431,162.40 × 169,196.56
4. Step 4: Simplify right side
   312,436.52x = 72,951,194,881.34
5. Step 5: Solve for x
   x = 72,951,194,881.34/312,436.52
6. Step 6: Final answer
   x = 233,491.25