Finding the Fourth Proportional to 110,665.40, 165,738.90 and 75,414.20

Step by Step Solution

1. Step 1: Write the proportion equation
   110,665.40 : 165,738.90 = 75,414.20 : x
2. Step 2: Convert to fraction form
   110,665.40/165,738.90 = 75,414.20/x
3. Step 3: Cross multiply
   110,665.40x = 165,738.90 × 75,414.20
4. Step 4: Simplify right side
   110,665.40x = 12,499,066,552.38
5. Step 5: Solve for x
   x = 12,499,066,552.38/110,665.40
6. Step 6: Final answer
   x = 112,944.67