Finding the Fourth Proportional to 120,517.82, 166,322.59 and 66,805.10

Step by Step Solution

1. Step 1: Write the proportion equation
   120,517.82 : 166,322.59 = 66,805.10 : x
2. Step 2: Convert to fraction form
   120,517.82/166,322.59 = 66,805.10/x
3. Step 3: Cross multiply
   120,517.82x = 166,322.59 × 66,805.10
4. Step 4: Simplify right side
   120,517.82x = 11,111,196,258.58
5. Step 5: Solve for x
   x = 11,111,196,258.58/120,517.82
6. Step 6: Final answer
   x = 92,195.47