Finding the Fourth Proportional to 31,158.49, 42,998.70 and 17,011.33

Step by Step Solution

1. Step 1: Write the proportion equation
   31,158.49 : 42,998.70 = 17,011.33 : x
2. Step 2: Convert to fraction form
   31,158.49/42,998.70 = 17,011.33/x
3. Step 3: Cross multiply
   31,158.49x = 42,998.70 × 17,011.33
4. Step 4: Simplify right side
   31,158.49x = 731,464,996.34
5. Step 5: Solve for x
   x = 731,464,996.34/31,158.49
6. Step 6: Final answer
   x = 23,475.63