Finding the Fourth Proportional to 194,923.56, 268,994.61 and 105,499.56

Step by Step Solution

1. Step 1: Write the proportion equation
   194,923.56 : 268,994.61 = 105,499.56 : x
2. Step 2: Convert to fraction form
   194,923.56/268,994.61 = 105,499.56/x
3. Step 3: Cross multiply
   194,923.56x = 268,994.61 × 105,499.56
4. Step 4: Simplify right side
   194,923.56x = 28,378,812,997.37
5. Step 5: Solve for x
   x = 28,378,812,997.37/194,923.56
6. Step 6: Final answer
   x = 145,589.45