Finding the Fourth Proportional to 31,259.34, 43,138 and 17,112.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,259.34 : 43,138 = 17,112.18 : x
2. Step 2: Convert to fraction form
   31,259.34/43,138 = 17,112.18/x
3. Step 3: Cross multiply
   31,259.34x = 43,138 × 17,112.18
4. Step 4: Simplify right side
   31,259.34x = 738,185,220.84
5. Step 5: Solve for x
   x = 738,185,220.84/31,259.34
6. Step 6: Final answer
   x = 23,614.87