Finding the Fourth Proportional to 132,945.42, 199,251.78 and 66,404.12

Step by Step Solution

1. Step 1: Write the proportion equation
   132,945.42 : 199,251.78 = 66,404.12 : x
2. Step 2: Convert to fraction form
   132,945.42/199,251.78 = 66,404.12/x
3. Step 3: Cross multiply
   132,945.42x = 199,251.78 × 66,404.12
4. Step 4: Simplify right side
   132,945.42x = 13,231,139,109.33
5. Step 5: Solve for x
   x = 13,231,139,109.33/132,945.42
6. Step 6: Final answer
   x = 99,523.09