Finding the Fourth Proportional to 30,939.84, 42,695.52 and 16,792.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,939.84 : 42,695.52 = 16,792.56 : x
2. Step 2: Convert to fraction form
   30,939.84/42,695.52 = 16,792.56/x
3. Step 3: Cross multiply
   30,939.84x = 42,695.52 × 16,792.56
4. Step 4: Simplify right side
   30,939.84x = 716,967,081.33
5. Step 5: Solve for x
   x = 716,967,081.33/30,939.84
6. Step 6: Final answer
   x = 23,172.94