Finding the Fourth Proportional to 31,159.04, 42,997.82 and 17,009.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,159.04 : 42,997.82 = 17,009.12 : x
2. Step 2: Convert to fraction form
   31,159.04/42,997.82 = 17,009.12/x
3. Step 3: Cross multiply
   31,159.04x = 42,997.82 × 17,009.12
4. Step 4: Simplify right side
   31,159.04x = 731,355,080.12
5. Step 5: Solve for x
   x = 731,355,080.12/31,159.04
6. Step 6: Final answer
   x = 23,471.68