Finding the Fourth Proportional to 119,164.10, 164,447.43 and 65,449.76

Step by Step Solution

1. Step 1: Write the proportion equation
   119,164.10 : 164,447.43 = 65,449.76 : x
2. Step 2: Convert to fraction form
   119,164.10/164,447.43 = 65,449.76/x
3. Step 3: Cross multiply
   119,164.10x = 164,447.43 × 65,449.76
4. Step 4: Simplify right side
   119,164.10x = 10,763,044,826.12
5. Step 5: Solve for x
   x = 10,763,044,826.12/119,164.10
6. Step 6: Final answer
   x = 90,321.20