Finding the Fourth Proportional to 256,093.50, 384,050.06 and 85,268.83

Step by Step Solution

1. Step 1: Write the proportion equation
   256,093.50 : 384,050.06 = 85,268.83 : x
2. Step 2: Convert to fraction form
   256,093.50/384,050.06 = 85,268.83/x
3. Step 3: Cross multiply
   256,093.50x = 384,050.06 × 85,268.83
4. Step 4: Simplify right side
   256,093.50x = 32,747,499,335.83
5. Step 5: Solve for x
   x = 32,747,499,335.83/256,093.50
6. Step 6: Final answer
   x = 127,873.21