Finding the Fourth Proportional to 30,810.69, 42,518.72 and 16,663.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,810.69 : 42,518.72 = 16,663.50 : x
2. Step 2: Convert to fraction form
   30,810.69/42,518.72 = 16,663.50/x
3. Step 3: Cross multiply
   30,810.69x = 42,518.72 × 16,663.50
4. Step 4: Simplify right side
   30,810.69x = 708,510,732.38
5. Step 5: Solve for x
   x = 708,510,732.38/30,810.69
6. Step 6: Final answer
   x = 22,995.61