Finding the Fourth Proportional to 120,308.34, 166,021.76 and 69,321.18

Step by Step Solution

1. Step 1: Write the proportion equation
   120,308.34 : 166,021.76 = 69,321.18 : x
2. Step 2: Convert to fraction form
   120,308.34/166,021.76 = 69,321.18/x
3. Step 3: Cross multiply
   120,308.34x = 166,021.76 × 69,321.18
4. Step 4: Simplify right side
   120,308.34x = 11,508,824,308.88
5. Step 5: Solve for x
   x = 11,508,824,308.88/120,308.34
6. Step 6: Final answer
   x = 95,661.07