Finding the Fourth Proportional to 120,834.12, 166,748.76 and 67,116.72

Step by Step Solution

1. Step 1: Write the proportion equation
   120,834.12 : 166,748.76 = 67,116.72 : x
2. Step 2: Convert to fraction form
   120,834.12/166,748.76 = 67,116.72/x
3. Step 3: Cross multiply
   120,834.12x = 166,748.76 × 67,116.72
4. Step 4: Simplify right side
   120,834.12x = 11,191,629,835.27
5. Step 5: Solve for x
   x = 11,191,629,835.27/120,834.12
6. Step 6: Final answer
   x = 92,619.78