Finding the Fourth Proportional to 119,031.77, 164,258.20 and 65,315.61

Step by Step Solution

1. Step 1: Write the proportion equation
   119,031.77 : 164,258.20 = 65,315.61 : x
2. Step 2: Convert to fraction form
   119,031.77/164,258.20 = 65,315.61/x
3. Step 3: Cross multiply
   119,031.77x = 164,258.20 × 65,315.61
4. Step 4: Simplify right side
   119,031.77x = 10,728,624,530.50
5. Step 5: Solve for x
   x = 10,728,624,530.50/119,031.77
6. Step 6: Final answer
   x = 90,132.45