Finding the Fourth Proportional to 268,095.57, 402,198.56 and 78,562.10

Step by Step Solution

1. Step 1: Write the proportion equation
   268,095.57 : 402,198.56 = 78,562.10 : x
2. Step 2: Convert to fraction form
   268,095.57/402,198.56 = 78,562.10/x
3. Step 3: Cross multiply
   268,095.57x = 402,198.56 × 78,562.10
4. Step 4: Simplify right side
   268,095.57x = 31,597,561,086.77
5. Step 5: Solve for x
   x = 31,597,561,086.77/268,095.57
6. Step 6: Final answer
   x = 117,859.32