Finding the Fourth Proportional to 120,556.71, 166,411.31 and 82,288.86

Step by Step Solution

1. Step 1: Write the proportion equation
   120,556.71 : 166,411.31 = 82,288.86 : x
2. Step 2: Convert to fraction form
   120,556.71/166,411.31 = 82,288.86/x
3. Step 3: Cross multiply
   120,556.71x = 166,411.31 × 82,288.86
4. Step 4: Simplify right side
   120,556.71x = 13,693,796,579.56
5. Step 5: Solve for x
   x = 13,693,796,579.56/120,556.71
6. Step 6: Final answer
   x = 113,588.01