Finding the Fourth Proportional to 120,662.73, 166,414.23 and 90,514.98

Step by Step Solution

1. Step 1: Write the proportion equation
   120,662.73 : 166,414.23 = 90,514.98 : x
2. Step 2: Convert to fraction form
   120,662.73/166,414.23 = 90,514.98/x
3. Step 3: Cross multiply
   120,662.73x = 166,414.23 × 90,514.98
4. Step 4: Simplify right side
   120,662.73x = 15,062,980,700.17
5. Step 5: Solve for x
   x = 15,062,980,700.17/120,662.73
6. Step 6: Final answer
   x = 124,835.40