Finding the Fourth Proportional to 256,500.15, 384,791.57 and 79,007.08

Step by Step Solution

1. Step 1: Write the proportion equation
   256,500.15 : 384,791.57 = 79,007.08 : x
2. Step 2: Convert to fraction form
   256,500.15/384,791.57 = 79,007.08/x
3. Step 3: Cross multiply
   256,500.15x = 384,791.57 × 79,007.08
4. Step 4: Simplify right side
   256,500.15x = 30,401,257,194.82
5. Step 5: Solve for x
   x = 30,401,257,194.82/256,500.15
6. Step 6: Final answer
   x = 118,523.35