Finding the Fourth Proportional to 30,568.32, 42,185.21 and 17,140.82

Step by Step Solution

1. Step 1: Write the proportion equation
   30,568.32 : 42,185.21 = 17,140.82 : x
2. Step 2: Convert to fraction form
   30,568.32/42,185.21 = 17,140.82/x
3. Step 3: Cross multiply
   30,568.32x = 42,185.21 × 17,140.82
4. Step 4: Simplify right side
   30,568.32x = 723,088,794.64
5. Step 5: Solve for x
   x = 723,088,794.64/30,568.32
6. Step 6: Final answer
   x = 23,654.84