Finding the Fourth Proportional to 105,513.10, 145,568.32 and 69,234.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,513.10 : 145,568.32 = 69,234.56 : x
2. Step 2: Convert to fraction form
   105,513.10/145,568.32 = 69,234.56/x
3. Step 3: Cross multiply
   105,513.10x = 145,568.32 × 69,234.56
4. Step 4: Simplify right side
   105,513.10x = 10,078,358,585.14
5. Step 5: Solve for x
   x = 10,078,358,585.14/105,513.10
6. Step 6: Final answer
   x = 95,517.60