Finding the Fourth Proportional to 260,104.72, 358,945 and 140,872.72

Step by Step Solution

1. Step 1: Write the proportion equation
   260,104.72 : 358,945 = 140,872.72 : x
2. Step 2: Convert to fraction form
   260,104.72/358,945 = 140,872.72/x
3. Step 3: Cross multiply
   260,104.72x = 358,945 × 140,872.72
4. Step 4: Simplify right side
   260,104.72x = 50,565,558,480.40
5. Step 5: Solve for x
   x = 50,565,558,480.40/260,104.72
6. Step 6: Final answer
   x = 194,404.62