Finding the Fourth Proportional to 309,228.93, 463,406.00 and 131,557.05

Step by Step Solution

1. Step 1: Write the proportion equation
   309,228.93 : 463,406.00 = 131,557.05 : x
2. Step 2: Convert to fraction form
   309,228.93/463,406.00 = 131,557.05/x
3. Step 3: Cross multiply
   309,228.93x = 463,406.00 × 131,557.05
4. Step 4: Simplify right side
   309,228.93x = 60,964,325,654.51
5. Step 5: Solve for x
   x = 60,964,325,654.51/309,228.93
6. Step 6: Final answer
   x = 197,149.49