Finding the Fourth Proportional to 78,327.34, 117,452.42 and 28,399.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,327.34 : 117,452.42 = 28,399.94 : x
2. Step 2: Convert to fraction form
   78,327.34/117,452.42 = 28,399.94/x
3. Step 3: Cross multiply
   78,327.34x = 117,452.42 × 28,399.94
4. Step 4: Simplify right side
   78,327.34x = 3,335,641,680.85
5. Step 5: Solve for x
   x = 3,335,641,680.85/78,327.34
6. Step 6: Final answer
   x = 42,585.92