Finding the Fourth Proportional to 30,933.68, 42,688.59 and 16,786.52

Step by Step Solution

1. Step 1: Write the proportion equation
   30,933.68 : 42,688.59 = 16,786.52 : x
2. Step 2: Convert to fraction form
   30,933.68/42,688.59 = 16,786.52/x
3. Step 3: Cross multiply
   30,933.68x = 42,688.59 × 16,786.52
4. Step 4: Simplify right side
   30,933.68x = 716,593,039.48
5. Step 5: Solve for x
   x = 716,593,039.48/30,933.68
6. Step 6: Final answer
   x = 23,165.46