Finding the Fourth Proportional to 105,732.12, 145,921.78 and 67,526.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,732.12 : 145,921.78 = 67,526.76 : x
2. Step 2: Convert to fraction form
   105,732.12/145,921.78 = 67,526.76/x
3. Step 3: Cross multiply
   105,732.12x = 145,921.78 × 67,526.76
4. Step 4: Simplify right side
   105,732.12x = 9,853,625,016.83
5. Step 5: Solve for x
   x = 9,853,625,016.83/105,732.12
6. Step 6: Final answer
   x = 93,194.24