Finding the Fourth Proportional to 103,689.36, 142,960.32 and 67,822.56

Step by Step Solution

1. Step 1: Write the proportion equation
   103,689.36 : 142,960.32 = 67,822.56 : x
2. Step 2: Convert to fraction form
   103,689.36/142,960.32 = 67,822.56/x
3. Step 3: Cross multiply
   103,689.36x = 142,960.32 × 67,822.56
4. Step 4: Simplify right side
   103,689.36x = 9,695,934,880.82
5. Step 5: Solve for x
   x = 9,695,934,880.82/103,689.36
6. Step 6: Final answer
   x = 93,509.45