Finding the Fourth Proportional to 120,352.25, 166,088.69 and 65,906.72

Step by Step Solution

1. Step 1: Write the proportion equation
   120,352.25 : 166,088.69 = 65,906.72 : x
2. Step 2: Convert to fraction form
   120,352.25/166,088.69 = 65,906.72/x
3. Step 3: Cross multiply
   120,352.25x = 166,088.69 × 65,906.72
4. Step 4: Simplify right side
   120,352.25x = 10,946,360,787.00
5. Step 5: Solve for x
   x = 10,946,360,787.00/120,352.25
6. Step 6: Final answer
   x = 90,952.69