Finding the Fourth Proportional to 31,288.32, 43,179.12 and 17,141.40

Step by Step Solution

1. Step 1: Write the proportion equation
   31,288.32 : 43,179.12 = 17,141.40 : x
2. Step 2: Convert to fraction form
   31,288.32/43,179.12 = 17,141.40/x
3. Step 3: Cross multiply
   31,288.32x = 43,179.12 × 17,141.40
4. Step 4: Simplify right side
   31,288.32x = 740,150,567.57
5. Step 5: Solve for x
   x = 740,150,567.57/31,288.32
6. Step 6: Final answer
   x = 23,655.81