Finding the Fourth Proportional to 31,028.79, 42,820.47 and 17,600.95

Step by Step Solution

1. Step 1: Write the proportion equation
   31,028.79 : 42,820.47 = 17,600.95 : x
2. Step 2: Convert to fraction form
   31,028.79/42,820.47 = 17,600.95/x
3. Step 3: Cross multiply
   31,028.79x = 42,820.47 × 17,600.95
4. Step 4: Simplify right side
   31,028.79x = 753,680,951.45
5. Step 5: Solve for x
   x = 753,680,951.45/31,028.79
6. Step 6: Final answer
   x = 24,289.73