Finding the Fourth Proportional to 646,404.22, 969,603.69 and 197,123.78

Step by Step Solution

1. Step 1: Write the proportion equation
   646,404.22 : 969,603.69 = 197,123.78 : x
2. Step 2: Convert to fraction form
   646,404.22/969,603.69 = 197,123.78/x
3. Step 3: Cross multiply
   646,404.22x = 969,603.69 × 197,123.78
4. Step 4: Simplify right side
   646,404.22x = 191,131,939,626.73
5. Step 5: Solve for x
   x = 191,131,939,626.73/646,404.22
6. Step 6: Final answer
   x = 295,684.86