Finding the Fourth Proportional to 256,269.91, 384,441.62 and 78,791.82

Step by Step Solution

1. Step 1: Write the proportion equation
   256,269.91 : 384,441.62 = 78,791.82 : x
2. Step 2: Convert to fraction form
   256,269.91/384,441.62 = 78,791.82/x
3. Step 3: Cross multiply
   256,269.91x = 384,441.62 × 78,791.82
4. Step 4: Simplify right side
   256,269.91x = 30,290,854,923.55
5. Step 5: Solve for x
   x = 30,290,854,923.55/256,269.91
6. Step 6: Final answer
   x = 118,199.03