Finding the Fourth Proportional to 406,264.72, 560,552.52 and 261,146.32

Step by Step Solution

1. Step 1: Write the proportion equation
   406,264.72 : 560,552.52 = 261,146.32 : x
2. Step 2: Convert to fraction form
   406,264.72/560,552.52 = 261,146.32/x
3. Step 3: Cross multiply
   406,264.72x = 560,552.52 × 261,146.32
4. Step 4: Simplify right side
   406,264.72x = 146,386,227,764.73
5. Step 5: Solve for x
   x = 146,386,227,764.73/406,264.72
6. Step 6: Final answer
   x = 360,322.27