Finding the Fourth Proportional to 30,910.88, 42,659.30 and 17,300.28

Step by Step Solution

1. Step 1: Write the proportion equation
   30,910.88 : 42,659.30 = 17,300.28 : x
2. Step 2: Convert to fraction form
   30,910.88/42,659.30 = 17,300.28/x
3. Step 3: Cross multiply
   30,910.88x = 42,659.30 × 17,300.28
4. Step 4: Simplify right side
   30,910.88x = 738,017,957.84
5. Step 5: Solve for x
   x = 738,017,957.84/30,910.88
6. Step 6: Final answer
   x = 23,875.67