Finding the Fourth Proportional to 120,345.71, 166,104.97 and 80,061.17

Step by Step Solution

1. Step 1: Write the proportion equation
   120,345.71 : 166,104.97 = 80,061.17 : x
2. Step 2: Convert to fraction form
   120,345.71/166,104.97 = 80,061.17/x
3. Step 3: Cross multiply
   120,345.71x = 166,104.97 × 80,061.17
4. Step 4: Simplify right side
   120,345.71x = 13,298,558,456.12
5. Step 5: Solve for x
   x = 13,298,558,456.12/120,345.71
6. Step 6: Final answer
   x = 110,502.97