Finding the Fourth Proportional to 120,816, 166,728.33 and 67,105.98

Step by Step Solution

1. Step 1: Write the proportion equation
   120,816 : 166,728.33 = 67,105.98 : x
2. Step 2: Convert to fraction form
   120,816/166,728.33 = 67,105.98/x
3. Step 3: Cross multiply
   120,816x = 166,728.33 × 67,105.98
4. Step 4: Simplify right side
   120,816x = 11,188,467,978.41
5. Step 5: Solve for x
   x = 11,188,467,978.41/120,816
6. Step 6: Final answer
   x = 92,607.50