Finding the Fourth Proportional to 315,168.42, 434,938.59 and 171,933.78

Step by Step Solution

1. Step 1: Write the proportion equation
   315,168.42 : 434,938.59 = 171,933.78 : x
2. Step 2: Convert to fraction form
   315,168.42/434,938.59 = 171,933.78/x
3. Step 3: Cross multiply
   315,168.42x = 434,938.59 × 171,933.78
4. Step 4: Simplify right side
   315,168.42x = 74,780,635,846.57
5. Step 5: Solve for x
   x = 74,780,635,846.57/315,168.42
6. Step 6: Final answer
   x = 237,271.98