Finding the Fourth Proportional to 31,015.85, 42,800.55 and 17,588.00

Step by Step Solution

1. Step 1: Write the proportion equation
   31,015.85 : 42,800.55 = 17,588.00 : x
2. Step 2: Convert to fraction form
   31,015.85/42,800.55 = 17,588.00/x
3. Step 3: Cross multiply
   31,015.85x = 42,800.55 × 17,588.00
4. Step 4: Simplify right side
   31,015.85x = 752,775,859.40
5. Step 5: Solve for x
   x = 752,775,859.40/31,015.85
6. Step 6: Final answer
   x = 24,270.69