Finding the Fourth Proportional to 518,162.82, 715,116.51 and 303,290.34

Step by Step Solution

1. Step 1: Write the proportion equation
   518,162.82 : 715,116.51 = 303,290.34 : x
2. Step 2: Convert to fraction form
   518,162.82/715,116.51 = 303,290.34/x
3. Step 3: Cross multiply
   518,162.82x = 715,116.51 × 303,290.34
4. Step 4: Simplify right side
   518,162.82x = 216,887,929,457.51
5. Step 5: Solve for x
   x = 216,887,929,457.51/518,162.82
6. Step 6: Final answer
   x = 418,571.00