Finding the Fourth Proportional to 103,736.10, 155,215.35 and 68,744.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,736.10 : 155,215.35 = 68,744.10 : x
2. Step 2: Convert to fraction form
   103,736.10/155,215.35 = 68,744.10/x
3. Step 3: Cross multiply
   103,736.10x = 155,215.35 × 68,744.10
4. Step 4: Simplify right side
   103,736.10x = 10,670,139,541.94
5. Step 5: Solve for x
   x = 10,670,139,541.94/103,736.10
6. Step 6: Final answer
   x = 102,858.50