Finding the Fourth Proportional to 105,429.48, 145,552.83 and 69,723.06

Step by Step Solution

1. Step 1: Write the proportion equation
   105,429.48 : 145,552.83 = 69,723.06 : x
2. Step 2: Convert to fraction form
   105,429.48/145,552.83 = 69,723.06/x
3. Step 3: Cross multiply
   105,429.48x = 145,552.83 × 69,723.06
4. Step 4: Simplify right side
   105,429.48x = 10,148,388,699.26
5. Step 5: Solve for x
   x = 10,148,388,699.26/105,429.48
6. Step 6: Final answer
   x = 96,257.60