Finding the Fourth Proportional to 119,288.80, 164,618.72 and 65,574.15

Step by Step Solution

1. Step 1: Write the proportion equation
   119,288.80 : 164,618.72 = 65,574.15 : x
2. Step 2: Convert to fraction form
   119,288.80/164,618.72 = 65,574.15/x
3. Step 3: Cross multiply
   119,288.80x = 164,618.72 × 65,574.15
4. Step 4: Simplify right side
   119,288.80x = 10,794,732,638.09
5. Step 5: Solve for x
   x = 10,794,732,638.09/119,288.80
6. Step 6: Final answer
   x = 90,492.42