Finding the Fourth Proportional to 132,945.10, 199,359.27 and 49,780.78

Step by Step Solution

1. Step 1: Write the proportion equation
   132,945.10 : 199,359.27 = 49,780.78 : x
2. Step 2: Convert to fraction form
   132,945.10/199,359.27 = 49,780.78/x
3. Step 3: Cross multiply
   132,945.10x = 199,359.27 × 49,780.78
4. Step 4: Simplify right side
   132,945.10x = 9,924,259,960.83
5. Step 5: Solve for x
   x = 9,924,259,960.83/132,945.10
6. Step 6: Final answer
   x = 74,649.31