Finding the Fourth Proportional to 181,218.29, 249,790.43 and 123,056.78

Step by Step Solution

1. Step 1: Write the proportion equation
   181,218.29 : 249,790.43 = 123,056.78 : x
2. Step 2: Convert to fraction form
   181,218.29/249,790.43 = 123,056.78/x
3. Step 3: Cross multiply
   181,218.29x = 249,790.43 × 123,056.78
4. Step 4: Simplify right side
   181,218.29x = 30,738,405,049.31
5. Step 5: Solve for x
   x = 30,738,405,049.31/181,218.29
6. Step 6: Final answer
   x = 169,620.88