Finding the Fourth Proportional to 309,180.81, 464,025.57 and 131,888.01

Step by Step Solution

1. Step 1: Write the proportion equation
   309,180.81 : 464,025.57 = 131,888.01 : x
2. Step 2: Convert to fraction form
   309,180.81/464,025.57 = 131,888.01/x
3. Step 3: Cross multiply
   309,180.81x = 464,025.57 × 131,888.01
4. Step 4: Simplify right side
   309,180.81x = 61,199,409,016.42
5. Step 5: Solve for x
   x = 61,199,409,016.42/309,180.81
6. Step 6: Final answer
   x = 197,940.52