Finding the Fourth Proportional to 312,429.42, 431,152.83 and 169,189.62

Step by Step Solution

1. Step 1: Write the proportion equation
   312,429.42 : 431,152.83 = 169,189.62 : x
2. Step 2: Convert to fraction form
   312,429.42/431,152.83 = 169,189.62/x
3. Step 3: Cross multiply
   312,429.42x = 431,152.83 × 169,189.62
4. Step 4: Simplify right side
   312,429.42x = 72,946,583,469.62
5. Step 5: Solve for x
   x = 72,946,583,469.62/312,429.42
6. Step 6: Final answer
   x = 233,481.80