Finding the Fourth Proportional to 109,025.67, 150,428.58 and 66,568.71

Step by Step Solution

1. Step 1: Write the proportion equation
   109,025.67 : 150,428.58 = 66,568.71 : x
2. Step 2: Convert to fraction form
   109,025.67/150,428.58 = 66,568.71/x
3. Step 3: Cross multiply
   109,025.67x = 150,428.58 × 66,568.71
4. Step 4: Simplify right side
   109,025.67x = 10,013,836,517.73
5. Step 5: Solve for x
   x = 10,013,836,517.73/109,025.67
6. Step 6: Final answer
   x = 91,848.43