Finding the Fourth Proportional to 30,609.65, 42,235.98 and 17,181.47

Step by Step Solution

1. Step 1: Write the proportion equation
   30,609.65 : 42,235.98 = 17,181.47 : x
2. Step 2: Convert to fraction form
   30,609.65/42,235.98 = 17,181.47/x
3. Step 3: Cross multiply
   30,609.65x = 42,235.98 × 17,181.47
4. Step 4: Simplify right side
   30,609.65x = 725,676,123.52
5. Step 5: Solve for x
   x = 725,676,123.52/30,609.65
6. Step 6: Final answer
   x = 23,707.43