Finding the Fourth Proportional to 30,908.88, 42,654.15 and 16,761.69

Step by Step Solution

1. Step 1: Write the proportion equation
   30,908.88 : 42,654.15 = 16,761.69 : x
2. Step 2: Convert to fraction form
   30,908.88/42,654.15 = 16,761.69/x
3. Step 3: Cross multiply
   30,908.88x = 42,654.15 × 16,761.69
4. Step 4: Simplify right side
   30,908.88x = 714,955,639.51
5. Step 5: Solve for x
   x = 714,955,639.51/30,908.88
6. Step 6: Final answer
   x = 23,131.08