Finding the Fourth Proportional to 105,429.98, 145,553.52 and 69,723.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,429.98 : 145,553.52 = 69,723.56 : x
2. Step 2: Convert to fraction form
   105,429.98/145,553.52 = 69,723.56/x
3. Step 3: Cross multiply
   105,429.98x = 145,553.52 × 69,723.56
4. Step 4: Simplify right side
   105,429.98x = 10,148,509,584.93
5. Step 5: Solve for x
   x = 10,148,509,584.93/105,429.98
6. Step 6: Final answer
   x = 96,258.29