Finding the Fourth Proportional to 259,520.82, 358,139.25 and 140,288.82

Step by Step Solution

1. Step 1: Write the proportion equation
   259,520.82 : 358,139.25 = 140,288.82 : x
2. Step 2: Convert to fraction form
   259,520.82/358,139.25 = 140,288.82/x
3. Step 3: Cross multiply
   259,520.82x = 358,139.25 × 140,288.82
4. Step 4: Simplify right side
   259,520.82x = 50,242,932,778.19
5. Step 5: Solve for x
   x = 50,242,932,778.19/259,520.82
6. Step 6: Final answer
   x = 193,598.85