Finding the Fourth Proportional to 31,427.94, 43,371.40 and 17,088.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,427.94 : 43,371.40 = 17,088.72 : x
2. Step 2: Convert to fraction form
   31,427.94/43,371.40 = 17,088.72/x
3. Step 3: Cross multiply
   31,427.94x = 43,371.40 × 17,088.72
4. Step 4: Simplify right side
   31,427.94x = 741,161,710.61
5. Step 5: Solve for x
   x = 741,161,710.61/31,427.94
6. Step 6: Final answer
   x = 23,582.89