Finding the Fourth Proportional to 30,964.94, 42,731.83 and 16,817.78

Step by Step Solution

1. Step 1: Write the proportion equation
   30,964.94 : 42,731.83 = 16,817.78 : x
2. Step 2: Convert to fraction form
   30,964.94/42,731.83 = 16,817.78/x
3. Step 3: Cross multiply
   30,964.94x = 42,731.83 × 16,817.78
4. Step 4: Simplify right side
   30,964.94x = 718,654,515.94
5. Step 5: Solve for x
   x = 718,654,515.94/30,964.94
6. Step 6: Final answer
   x = 23,208.65