Finding the Fourth Proportional to 670,086.84, 1,005,278.52 and 220,789.56

Step by Step Solution

1. Step 1: Write the proportion equation
   670,086.84 : 1,005,278.52 = 220,789.56 : x
2. Step 2: Convert to fraction form
   670,086.84/1,005,278.52 = 220,789.56/x
3. Step 3: Cross multiply
   670,086.84x = 1,005,278.52 × 220,789.56
4. Step 4: Simplify right side
   670,086.84x = 221,955,002,108.25
5. Step 5: Solve for x
   x = 221,955,002,108.25/670,086.84
6. Step 6: Final answer
   x = 331,233.19