Finding the Fourth Proportional to 31,426.83, 43,367.91 and 17,279.57

Step by Step Solution

1. Step 1: Write the proportion equation
   31,426.83 : 43,367.91 = 17,279.57 : x
2. Step 2: Convert to fraction form
   31,426.83/43,367.91 = 17,279.57/x
3. Step 3: Cross multiply
   31,426.83x = 43,367.91 × 17,279.57
4. Step 4: Simplify right side
   31,426.83x = 749,378,619.76
5. Step 5: Solve for x
   x = 749,378,619.76/31,426.83
6. Step 6: Final answer
   x = 23,845.19