Finding the Fourth Proportional to 141,734.50, 195,593.61 and 78,072.10

Step by Step Solution

1. Step 1: Write the proportion equation
   141,734.50 : 195,593.61 = 78,072.10 : x
2. Step 2: Convert to fraction form
   141,734.50/195,593.61 = 78,072.10/x
3. Step 3: Cross multiply
   141,734.50x = 195,593.61 × 78,072.10
4. Step 4: Simplify right side
   141,734.50x = 15,270,403,879.28
5. Step 5: Solve for x
   x = 15,270,403,879.28/141,734.50
6. Step 6: Final answer
   x = 107,739.50