Finding the Fourth Proportional to 105,239.37, 145,119.82 and 69,383.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,239.37 : 145,119.82 = 69,383.50 : x
2. Step 2: Convert to fraction form
   105,239.37/145,119.82 = 69,383.50/x
3. Step 3: Cross multiply
   105,239.37x = 145,119.82 × 69,383.50
4. Step 4: Simplify right side
   105,239.37x = 10,068,921,030.97
5. Step 5: Solve for x
   x = 10,068,921,030.97/105,239.37
6. Step 6: Final answer
   x = 95,676.37