Finding the Fourth Proportional to 31,276.32, 43,164.18 and 17,131.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,276.32 : 43,164.18 = 17,131.20 : x
2. Step 2: Convert to fraction form
   31,276.32/43,164.18 = 17,131.20/x
3. Step 3: Cross multiply
   31,276.32x = 43,164.18 × 17,131.20
4. Step 4: Simplify right side
   31,276.32x = 739,454,200.42
5. Step 5: Solve for x
   x = 739,454,200.42/31,276.32
6. Step 6: Final answer
   x = 23,642.62