Finding the Fourth Proportional to 301,144.10, 415,577.72 and 186,399.89

Step by Step Solution

1. Step 1: Write the proportion equation
   301,144.10 : 415,577.72 = 186,399.89 : x
2. Step 2: Convert to fraction form
   301,144.10/415,577.72 = 186,399.89/x
3. Step 3: Cross multiply
   301,144.10x = 415,577.72 × 186,399.89
4. Step 4: Simplify right side
   301,144.10x = 77,463,639,682.56
5. Step 5: Solve for x
   x = 77,463,639,682.56/301,144.10
6. Step 6: Final answer
   x = 257,231.14