Finding the Fourth Proportional to 30,623.59, 42,257.29 and 17,196.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,623.59 : 42,257.29 = 17,196.31 : x
2. Step 2: Convert to fraction form
   30,623.59/42,257.29 = 17,196.31/x
3. Step 3: Cross multiply
   30,623.59x = 42,257.29 × 17,196.31
4. Step 4: Simplify right side
   30,623.59x = 726,669,458.60
5. Step 5: Solve for x
   x = 726,669,458.60/30,623.59
6. Step 6: Final answer
   x = 23,729.07