Finding the Fourth Proportional to 105,636.56, 158,481.24 and 74,532.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,636.56 : 158,481.24 = 74,532.56 : x
2. Step 2: Convert to fraction form
   105,636.56/158,481.24 = 74,532.56/x
3. Step 3: Cross multiply
   105,636.56x = 158,481.24 × 74,532.56
4. Step 4: Simplify right side
   105,636.56x = 11,812,012,529.17
5. Step 5: Solve for x
   x = 11,812,012,529.17/105,636.56
6. Step 6: Final answer
   x = 111,817.47