Finding the Fourth Proportional to 194,489, 268,395.06 and 105,065

Step by Step Solution

1. Step 1: Write the proportion equation
   194,489 : 268,395.06 = 105,065 : x
2. Step 2: Convert to fraction form
   194,489/268,395.06 = 105,065/x
3. Step 3: Cross multiply
   194,489x = 268,395.06 × 105,065
4. Step 4: Simplify right side
   194,489x = 28,198,926,978.90
5. Step 5: Solve for x
   x = 28,198,926,978.90/194,489
6. Step 6: Final answer
   x = 144,989.83