Finding the Fourth Proportional to 315,436.41, 435,302.06 and 172,196.42

Step by Step Solution

1. Step 1: Write the proportion equation
   315,436.41 : 435,302.06 = 172,196.42 : x
2. Step 2: Convert to fraction form
   315,436.41/435,302.06 = 172,196.42/x
3. Step 3: Cross multiply
   315,436.41x = 435,302.06 × 172,196.42
4. Step 4: Simplify right side
   315,436.41x = 74,957,456,350.63
5. Step 5: Solve for x
   x = 74,957,456,350.63/315,436.41
6. Step 6: Final answer
   x = 237,630.96