Finding the Fourth Proportional to 105,238.37, 145,118.44 and 69,382.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,238.37 : 145,118.44 = 69,382.50 : x
2. Step 2: Convert to fraction form
   105,238.37/145,118.44 = 69,382.50/x
3. Step 3: Cross multiply
   105,238.37x = 145,118.44 × 69,382.50
4. Step 4: Simplify right side
   105,238.37x = 10,068,680,163.30
5. Step 5: Solve for x
   x = 10,068,680,163.30/105,238.37
6. Step 6: Final answer
   x = 95,674.99