Finding the Fourth Proportional to 120,500.56, 166,284.37 and 69,510.25

Step by Step Solution

1. Step 1: Write the proportion equation
   120,500.56 : 166,284.37 = 69,510.25 : x
2. Step 2: Convert to fraction form
   120,500.56/166,284.37 = 69,510.25/x
3. Step 3: Cross multiply
   120,500.56x = 166,284.37 × 69,510.25
4. Step 4: Simplify right side
   120,500.56x = 11,558,468,129.79
5. Step 5: Solve for x
   x = 11,558,468,129.79/120,500.56
6. Step 6: Final answer
   x = 95,920.45