Finding the Fourth Proportional to 119,719.92, 165,210.72 and 66,003.72

Step by Step Solution

1. Step 1: Write the proportion equation
   119,719.92 : 165,210.72 = 66,003.72 : x
2. Step 2: Convert to fraction form
   119,719.92/165,210.72 = 66,003.72/x
3. Step 3: Cross multiply
   119,719.92x = 165,210.72 × 66,003.72
4. Step 4: Simplify right side
   119,719.92x = 10,904,522,103.88
5. Step 5: Solve for x
   x = 10,904,522,103.88/119,719.92
6. Step 6: Final answer
   x = 91,083.61