Finding the Fourth Proportional to 406,667.39, 561,200.94 and 225,406.53

Step by Step Solution

1. Step 1: Write the proportion equation
   406,667.39 : 561,200.94 = 225,406.53 : x
2. Step 2: Convert to fraction form
   406,667.39/561,200.94 = 225,406.53/x
3. Step 3: Cross multiply
   406,667.39x = 561,200.94 × 225,406.53
4. Step 4: Simplify right side
   406,667.39x = 126,498,356,518.14
5. Step 5: Solve for x
   x = 126,498,356,518.14/406,667.39
6. Step 6: Final answer
   x = 311,060.98