Finding the Fourth Proportional to 355,890.72, 491,126.64 and 194,742.72

Step by Step Solution

1. Step 1: Write the proportion equation
   355,890.72 : 491,126.64 = 194,742.72 : x
2. Step 2: Convert to fraction form
   355,890.72/491,126.64 = 194,742.72/x
3. Step 3: Cross multiply
   355,890.72x = 491,126.64 × 194,742.72
4. Step 4: Simplify right side
   355,890.72x = 95,643,337,738.06
5. Step 5: Solve for x
   x = 95,643,337,738.06/355,890.72
6. Step 6: Final answer
   x = 268,743.56