Finding the Fourth Proportional to 670,429.15, 1,005,674.72 and 221,189.27

Step by Step Solution

1. Step 1: Write the proportion equation
   670,429.15 : 1,005,674.72 = 221,189.27 : x
2. Step 2: Convert to fraction form
   670,429.15/1,005,674.72 = 221,189.27/x
3. Step 3: Cross multiply
   670,429.15x = 1,005,674.72 × 221,189.27
4. Step 4: Simplify right side
   670,429.15x = 222,444,451,039.93
5. Step 5: Solve for x
   x = 222,444,451,039.93/670,429.15
6. Step 6: Final answer
   x = 331,794.12