Finding the Fourth Proportional to 483,834.35, 667,714.19 and 268,978

Step by Step Solution

1. Step 1: Write the proportion equation
   483,834.35 : 667,714.19 = 268,978 : x
2. Step 2: Convert to fraction form
   483,834.35/667,714.19 = 268,978/x
3. Step 3: Cross multiply
   483,834.35x = 667,714.19 × 268,978
4. Step 4: Simplify right side
   483,834.35x = 179,600,427,397.82
5. Step 5: Solve for x
   x = 179,600,427,397.82/483,834.35
6. Step 6: Final answer
   x = 371,202.31