Finding the Fourth Proportional to 30,875.41, 42,608.15 and 16,728.18

Step by Step Solution

1. Step 1: Write the proportion equation
   30,875.41 : 42,608.15 = 16,728.18 : x
2. Step 2: Convert to fraction form
   30,875.41/42,608.15 = 16,728.18/x
3. Step 3: Cross multiply
   30,875.41x = 42,608.15 × 16,728.18
4. Step 4: Simplify right side
   30,875.41x = 712,756,802.67
5. Step 5: Solve for x
   x = 712,756,802.67/30,875.41
6. Step 6: Final answer
   x = 23,084.93