Finding the Fourth Proportional to 30,568.02, 42,192.87 and 19,959.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,568.02 : 42,192.87 = 19,959.30 : x
2. Step 2: Convert to fraction form
   30,568.02/42,192.87 = 19,959.30/x
3. Step 3: Cross multiply
   30,568.02x = 42,192.87 × 19,959.30
4. Step 4: Simplify right side
   30,568.02x = 842,140,150.19
5. Step 5: Solve for x
   x = 842,140,150.19/30,568.02
6. Step 6: Final answer
   x = 27,549.71