Finding the Fourth Proportional to 31,206.72, 43,065.18 and 17,059.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,206.72 : 43,065.18 = 17,059.68 : x
2. Step 2: Convert to fraction form
   31,206.72/43,065.18 = 17,059.68/x
3. Step 3: Cross multiply
   31,206.72x = 43,065.18 × 17,059.68
4. Step 4: Simplify right side
   31,206.72x = 734,678,189.94
5. Step 5: Solve for x
   x = 734,678,189.94/31,206.72
6. Step 6: Final answer
   x = 23,542.31