Finding the Fourth Proportional to 476,405.82, 657,441.15 and 261,559.72

Step by Step Solution

1. Step 1: Write the proportion equation
   476,405.82 : 657,441.15 = 261,559.72 : x
2. Step 2: Convert to fraction form
   476,405.82/657,441.15 = 261,559.72/x
3. Step 3: Cross multiply
   476,405.82x = 657,441.15 × 261,559.72
4. Step 4: Simplify right side
   476,405.82x = 171,960,123,110.48
5. Step 5: Solve for x
   x = 171,960,123,110.48/476,405.82
6. Step 6: Final answer
   x = 360,953.03