Finding the Fourth Proportional to 69,631.96, 104,640.72 and 67,943.92

Step by Step Solution

1. Step 1: Write the proportion equation
   69,631.96 : 104,640.72 = 67,943.92 : x
2. Step 2: Convert to fraction form
   69,631.96/104,640.72 = 67,943.92/x
3. Step 3: Cross multiply
   69,631.96x = 104,640.72 × 67,943.92
4. Step 4: Simplify right side
   69,631.96x = 7,109,700,708.42
5. Step 5: Solve for x
   x = 7,109,700,708.42/69,631.96
6. Step 6: Final answer
   x = 102,103.99