Finding the Fourth Proportional to 28,327.72, 42,496.68 and 23,109

Step by Step Solution

1. Step 1: Write the proportion equation
   28,327.72 : 42,496.68 = 23,109 : x
2. Step 2: Convert to fraction form
   28,327.72/42,496.68 = 23,109/x
3. Step 3: Cross multiply
   28,327.72x = 42,496.68 × 23,109
4. Step 4: Simplify right side
   28,327.72x = 982,055,778.12
5. Step 5: Solve for x
   x = 982,055,778.12/28,327.72
6. Step 6: Final answer
   x = 34,667.66