Finding the Fourth Proportional to 30,935.29, 42,690.69 and 16,788.14

Step by Step Solution

1. Step 1: Write the proportion equation
   30,935.29 : 42,690.69 = 16,788.14 : x
2. Step 2: Convert to fraction form
   30,935.29/42,690.69 = 16,788.14/x
3. Step 3: Cross multiply
   30,935.29x = 42,690.69 × 16,788.14
4. Step 4: Simplify right side
   30,935.29x = 716,697,280.42
5. Step 5: Solve for x
   x = 716,697,280.42/30,935.29
6. Step 6: Final answer
   x = 23,167.63