Finding the Fourth Proportional to 483,606.16, 725,969.69 and 259,404.51

Step by Step Solution

1. Step 1: Write the proportion equation
   483,606.16 : 725,969.69 = 259,404.51 : x
2. Step 2: Convert to fraction form
   483,606.16/725,969.69 = 259,404.51/x
3. Step 3: Cross multiply
   483,606.16x = 725,969.69 × 259,404.51
4. Step 4: Simplify right side
   483,606.16x = 188,319,808,079.45
5. Step 5: Solve for x
   x = 188,319,808,079.45/483,606.16
6. Step 6: Final answer
   x = 389,407.38