Finding the Fourth Proportional to 78,290.31, 117,452.76 and 33,309.27

Step by Step Solution

1. Step 1: Write the proportion equation
   78,290.31 : 117,452.76 = 33,309.27 : x
2. Step 2: Convert to fraction form
   78,290.31/117,452.76 = 33,309.27/x
3. Step 3: Cross multiply
   78,290.31x = 117,452.76 × 33,309.27
4. Step 4: Simplify right side
   78,290.31x = 3,912,265,581.27
5. Step 5: Solve for x
   x = 3,912,265,581.27/78,290.31
6. Step 6: Final answer
   x = 49,971.26