Finding the Fourth Proportional to 194,812, 268,840.56 and 105,388

Step by Step Solution

1. Step 1: Write the proportion equation
   194,812 : 268,840.56 = 105,388 : x
2. Step 2: Convert to fraction form
   194,812/268,840.56 = 105,388/x
3. Step 3: Cross multiply
   194,812x = 268,840.56 × 105,388
4. Step 4: Simplify right side
   194,812x = 28,332,568,937.28
5. Step 5: Solve for x
   x = 28,332,568,937.28/194,812
6. Step 6: Final answer
   x = 145,435.44