Finding the Fourth Proportional to 120,598.72, 166,436.22 and 66,901

Step by Step Solution

1. Step 1: Write the proportion equation
   120,598.72 : 166,436.22 = 66,901 : x
2. Step 2: Convert to fraction form
   120,598.72/166,436.22 = 66,901/x
3. Step 3: Cross multiply
   120,598.72x = 166,436.22 × 66,901
4. Step 4: Simplify right side
   120,598.72x = 11,134,749,554.22
5. Step 5: Solve for x
   x = 11,134,749,554.22/120,598.72
6. Step 6: Final answer
   x = 92,328.92