Finding the Fourth Proportional to 30,933.12, 42,687.83 and 16,785.96

Step by Step Solution

1. Step 1: Write the proportion equation
   30,933.12 : 42,687.83 = 16,785.96 : x
2. Step 2: Convert to fraction form
   30,933.12/42,687.83 = 16,785.96/x
3. Step 3: Cross multiply
   30,933.12x = 42,687.83 × 16,785.96
4. Step 4: Simplify right side
   30,933.12x = 716,556,122.94
5. Step 5: Solve for x
   x = 716,556,122.94/30,933.12
6. Step 6: Final answer
   x = 23,164.69