Finding the Fourth Proportional to 194,683.50, 268,663.50 and 105,259.50

Step by Step Solution

1. Step 1: Write the proportion equation
   194,683.50 : 268,663.50 = 105,259.50 : x
2. Step 2: Convert to fraction form
   194,683.50/268,663.50 = 105,259.50/x
3. Step 3: Cross multiply
   194,683.50x = 268,663.50 × 105,259.50
4. Step 4: Simplify right side
   194,683.50x = 28,279,385,678.25
5. Step 5: Solve for x
   x = 28,279,385,678.25/194,683.50
6. Step 6: Final answer
   x = 145,258.26