Finding the Fourth Proportional to 120,299.42, 165,632.82 and 105,949.10

Step by Step Solution

1. Step 1: Write the proportion equation
   120,299.42 : 165,632.82 = 105,949.10 : x
2. Step 2: Convert to fraction form
   120,299.42/165,632.82 = 105,949.10/x
3. Step 3: Cross multiply
   120,299.42x = 165,632.82 × 105,949.10
4. Step 4: Simplify right side
   120,299.42x = 17,548,648,209.46
5. Step 5: Solve for x
   x = 17,548,648,209.46/120,299.42
6. Step 6: Final answer
   x = 145,874.75