Finding the Fourth Proportional to 256,271.42, 384,443.88 and 78,793.32

Step by Step Solution

1. Step 1: Write the proportion equation
   256,271.42 : 384,443.88 = 78,793.32 : x
2. Step 2: Convert to fraction form
   256,271.42/384,443.88 = 78,793.32/x
3. Step 3: Cross multiply
   256,271.42x = 384,443.88 × 78,793.32
4. Step 4: Simplify right side
   256,271.42x = 30,291,609,658.88
5. Step 5: Solve for x
   x = 30,291,609,658.88/256,271.42
6. Step 6: Final answer
   x = 118,201.28