Finding the Fourth Proportional to 406,441.98, 560,953.89 and 245,320.02

Step by Step Solution

1. Step 1: Write the proportion equation
   406,441.98 : 560,953.89 = 245,320.02 : x
2. Step 2: Convert to fraction form
   406,441.98/560,953.89 = 245,320.02/x
3. Step 3: Cross multiply
   406,441.98x = 560,953.89 × 245,320.02
4. Step 4: Simplify right side
   406,441.98x = 137,613,219,513.88
5. Step 5: Solve for x
   x = 137,613,219,513.88/406,441.98
6. Step 6: Final answer
   x = 338,580.23