Finding the Fourth Proportional to 119,406.30, 164,774.73 and 65,689.92

Step by Step Solution

1. Step 1: Write the proportion equation
   119,406.30 : 164,774.73 = 65,689.92 : x
2. Step 2: Convert to fraction form
   119,406.30/164,774.73 = 65,689.92/x
3. Step 3: Cross multiply
   119,406.30x = 164,774.73 × 65,689.92
4. Step 4: Simplify right side
   119,406.30x = 10,824,038,831.72
5. Step 5: Solve for x
   x = 10,824,038,831.72/119,406.30
6. Step 6: Final answer
   x = 90,648.81