Finding the Fourth Proportional to 30,959.94, 42,724.73 and 16,812.79

Step by Step Solution

1. Step 1: Write the proportion equation
   30,959.94 : 42,724.73 = 16,812.79 : x
2. Step 2: Convert to fraction form
   30,959.94/42,724.73 = 16,812.79/x
3. Step 3: Cross multiply
   30,959.94x = 42,724.73 × 16,812.79
4. Step 4: Simplify right side
   30,959.94x = 718,321,913.30
5. Step 5: Solve for x
   x = 718,321,913.30/30,959.94
6. Step 6: Final answer
   x = 23,201.66