Finding the Fourth Proportional to 30,918.73, 42,667.63 and 16,771.59

Step by Step Solution

1. Step 1: Write the proportion equation
   30,918.73 : 42,667.63 = 16,771.59 : x
2. Step 2: Convert to fraction form
   30,918.73/42,667.63 = 16,771.59/x
3. Step 3: Cross multiply
   30,918.73x = 42,667.63 × 16,771.59
4. Step 4: Simplify right side
   30,918.73x = 715,603,996.63
5. Step 5: Solve for x
   x = 715,603,996.63/30,918.73
6. Step 6: Final answer
   x = 23,144.68