Finding the Fourth Proportional to 120,404.64, 166,156.57 and 65,956.37

Step by Step Solution

1. Step 1: Write the proportion equation
   120,404.64 : 166,156.57 = 65,956.37 : x
2. Step 2: Convert to fraction form
   120,404.64/166,156.57 = 65,956.37/x
3. Step 3: Cross multiply
   120,404.64x = 166,156.57 × 65,956.37
4. Step 4: Simplify right side
   120,404.64x = 10,959,084,208.85
5. Step 5: Solve for x
   x = 10,959,084,208.85/120,404.64
6. Step 6: Final answer
   x = 91,018.79