Finding the Fourth Proportional to 31,379.16, 43,303.50 and 17,231.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,379.16 : 43,303.50 = 17,231.88 : x
2. Step 2: Convert to fraction form
   31,379.16/43,303.50 = 17,231.88/x
3. Step 3: Cross multiply
   31,379.16x = 43,303.50 × 17,231.88
4. Step 4: Simplify right side
   31,379.16x = 746,200,715.58
5. Step 5: Solve for x
   x = 746,200,715.58/31,379.16
6. Step 6: Final answer
   x = 23,780.14