Finding the Fourth Proportional to 31,159.39, 42,998.32 and 17,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,159.39 : 42,998.32 = 17,009.50 : x
2. Step 2: Convert to fraction form
   31,159.39/42,998.32 = 17,009.50/x
3. Step 3: Cross multiply
   31,159.39x = 42,998.32 × 17,009.50
4. Step 4: Simplify right side
   31,159.39x = 731,379,924.04
5. Step 5: Solve for x
   x = 731,379,924.04/31,159.39
6. Step 6: Final answer
   x = 23,472.22