Finding the Fourth Proportional to 231,870.57, 319,981.38 and 131,268.57

Step by Step Solution

1. Step 1: Write the proportion equation
   231,870.57 : 319,981.38 = 131,268.57 : x
2. Step 2: Convert to fraction form
   231,870.57/319,981.38 = 131,268.57/x
3. Step 3: Cross multiply
   231,870.57x = 319,981.38 × 131,268.57
4. Step 4: Simplify right side
   231,870.57x = 42,003,498,179.23
5. Step 5: Solve for x
   x = 42,003,498,179.23/231,870.57
6. Step 6: Final answer
   x = 181,150.62