Finding the Fourth Proportional to 194,900.72, 268,962.99 and 105,476.72

Step by Step Solution

1. Step 1: Write the proportion equation
   194,900.72 : 268,962.99 = 105,476.72 : x
2. Step 2: Convert to fraction form
   194,900.72/268,962.99 = 105,476.72/x
3. Step 3: Cross multiply
   194,900.72x = 268,962.99 × 105,476.72
4. Step 4: Simplify right side
   194,900.72x = 28,369,332,641.78
5. Step 5: Solve for x
   x = 28,369,332,641.78/194,900.72
6. Step 6: Final answer
   x = 145,557.87