Finding the Fourth Proportional to 353,881, 488,355.78 and 194,905

Step by Step Solution

1. Step 1: Write the proportion equation
   353,881 : 488,355.78 = 194,905 : x
2. Step 2: Convert to fraction form
   353,881/488,355.78 = 194,905/x
3. Step 3: Cross multiply
   353,881x = 488,355.78 × 194,905
4. Step 4: Simplify right side
   353,881x = 95,182,983,300.90
5. Step 5: Solve for x
   x = 95,182,983,300.90/353,881
6. Step 6: Final answer
   x = 268,968.90