Finding the Fourth Proportional to 31,436.86, 43,382.01 and 17,289.70

Step by Step Solution

1. Step 1: Write the proportion equation
   31,436.86 : 43,382.01 = 17,289.70 : x
2. Step 2: Convert to fraction form
   31,436.86/43,382.01 = 17,289.70/x
3. Step 3: Cross multiply
   31,436.86x = 43,382.01 × 17,289.70
4. Step 4: Simplify right side
   31,436.86x = 750,061,938.30
5. Step 5: Solve for x
   x = 750,061,938.30/31,436.86
6. Step 6: Final answer
   x = 23,859.31