Finding the Fourth Proportional to 120,123.42, 165,765.11 and 65,674.54

Step by Step Solution

1. Step 1: Write the proportion equation
   120,123.42 : 165,765.11 = 65,674.54 : x
2. Step 2: Convert to fraction form
   120,123.42/165,765.11 = 65,674.54/x
3. Step 3: Cross multiply
   120,123.42x = 165,765.11 × 65,674.54
4. Step 4: Simplify right side
   120,123.42x = 10,886,547,018.93
5. Step 5: Solve for x
   x = 10,886,547,018.93/120,123.42
6. Step 6: Final answer
   x = 90,628.02