Finding the Fourth Proportional to 30,937.38, 42,693.61 and 16,790.22

Step by Step Solution

1. Step 1: Write the proportion equation
   30,937.38 : 42,693.61 = 16,790.22 : x
2. Step 2: Convert to fraction form
   30,937.38/42,693.61 = 16,790.22/x
3. Step 3: Cross multiply
   30,937.38x = 42,693.61 × 16,790.22
4. Step 4: Simplify right side
   30,937.38x = 716,835,062.52
5. Step 5: Solve for x
   x = 716,835,062.52/30,937.38
6. Step 6: Final answer
   x = 23,170.52