Finding the Fourth Proportional to 119,582.15, 165,023.12 and 65,870.78

Step by Step Solution

1. Step 1: Write the proportion equation
   119,582.15 : 165,023.12 = 65,870.78 : x
2. Step 2: Convert to fraction form
   119,582.15/165,023.12 = 65,870.78/x
3. Step 3: Cross multiply
   119,582.15x = 165,023.12 × 65,870.78
4. Step 4: Simplify right side
   119,582.15x = 10,870,200,477.96
5. Step 5: Solve for x
   x = 10,870,200,477.96/119,582.15
6. Step 6: Final answer
   x = 90,901.53