Finding the Fourth Proportional to 78,104.25, 117,132.16 and 28,177.86

Step by Step Solution

1. Step 1: Write the proportion equation
   78,104.25 : 117,132.16 = 28,177.86 : x
2. Step 2: Convert to fraction form
   78,104.25/117,132.16 = 28,177.86/x
3. Step 3: Cross multiply
   78,104.25x = 117,132.16 × 28,177.86
4. Step 4: Simplify right side
   78,104.25x = 3,300,533,605.98
5. Step 5: Solve for x
   x = 3,300,533,605.98/78,104.25
6. Step 6: Final answer
   x = 42,258.05