Finding the Fourth Proportional to 259,952.10, 389,064.15 and 188,672.10

Step by Step Solution

1. Step 1: Write the proportion equation
   259,952.10 : 389,064.15 = 188,672.10 : x
2. Step 2: Convert to fraction form
   259,952.10/389,064.15 = 188,672.10/x
3. Step 3: Cross multiply
   259,952.10x = 389,064.15 × 188,672.10
4. Step 4: Simplify right side
   259,952.10x = 73,405,550,215.22
5. Step 5: Solve for x
   x = 73,405,550,215.22/259,952.10
6. Step 6: Final answer
   x = 282,381.06