Finding the Fourth Proportional to 312,436.02, 431,161.71 and 169,196.06

Step by Step Solution

1. Step 1: Write the proportion equation
   312,436.02 : 431,161.71 = 169,196.06 : x
2. Step 2: Convert to fraction form
   312,436.02/431,161.71 = 169,196.06/x
3. Step 3: Cross multiply
   312,436.02x = 431,161.71 × 169,196.06
4. Step 4: Simplify right side
   312,436.02x = 72,950,860,399.05
5. Step 5: Solve for x
   x = 72,950,860,399.05/312,436.02
6. Step 6: Final answer
   x = 233,490.56