Finding the Fourth Proportional to 30,945.87, 42,705 and 16,798.69

Step by Step Solution

1. Step 1: Write the proportion equation
   30,945.87 : 42,705 = 16,798.69 : x
2. Step 2: Convert to fraction form
   30,945.87/42,705 = 16,798.69/x
3. Step 3: Cross multiply
   30,945.87x = 42,705 × 16,798.69
4. Step 4: Simplify right side
   30,945.87x = 717,388,056.45
5. Step 5: Solve for x
   x = 717,388,056.45/30,945.87
6. Step 6: Final answer
   x = 23,182.03