Finding the Fourth Proportional to 194,686.50, 268,667.37 and 105,262.50

Step by Step Solution

1. Step 1: Write the proportion equation
   194,686.50 : 268,667.37 = 105,262.50 : x
2. Step 2: Convert to fraction form
   194,686.50/268,667.37 = 105,262.50/x
3. Step 3: Cross multiply
   194,686.50x = 268,667.37 × 105,262.50
4. Step 4: Simplify right side
   194,686.50x = 28,280,599,034.63
5. Step 5: Solve for x
   x = 28,280,599,034.63/194,686.50
6. Step 6: Final answer
   x = 145,262.25