Finding the Fourth Proportional to 31,495.20, 43,462.71 and 17,155.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,495.20 : 43,462.71 = 17,155.18 : x
2. Step 2: Convert to fraction form
   31,495.20/43,462.71 = 17,155.18/x
3. Step 3: Cross multiply
   31,495.20x = 43,462.71 × 17,155.18
4. Step 4: Simplify right side
   31,495.20x = 745,610,667.67
5. Step 5: Solve for x
   x = 745,610,667.67/31,495.20
6. Step 6: Final answer
   x = 23,673.79