Finding the Fourth Proportional to 30,809.30, 42,516.56 and 16,662.14

Step by Step Solution

1. Step 1: Write the proportion equation
   30,809.30 : 42,516.56 = 16,662.14 : x
2. Step 2: Convert to fraction form
   30,809.30/42,516.56 = 16,662.14/x
3. Step 3: Cross multiply
   30,809.30x = 42,516.56 × 16,662.14
4. Step 4: Simplify right side
   30,809.30x = 708,416,875.04
5. Step 5: Solve for x
   x = 708,416,875.04/30,809.30
6. Step 6: Final answer
   x = 22,993.61