Finding the Fourth Proportional to 262,719, 362,560.86 and 143,487

Step by Step Solution

1. Step 1: Write the proportion equation
   262,719 : 362,560.86 = 143,487 : x
2. Step 2: Convert to fraction form
   262,719/362,560.86 = 143,487/x
3. Step 3: Cross multiply
   262,719x = 362,560.86 × 143,487
4. Step 4: Simplify right side
   262,719x = 52,022,770,118.82
5. Step 5: Solve for x
   x = 52,022,770,118.82/262,719
6. Step 6: Final answer
   x = 198,016.78