Finding the Fourth Proportional to 131,443.92, 197,268.12 and 91,743.12

Step by Step Solution

1. Step 1: Write the proportion equation
   131,443.92 : 197,268.12 = 91,743.12 : x
2. Step 2: Convert to fraction form
   131,443.92/197,268.12 = 91,743.12/x
3. Step 3: Cross multiply
   131,443.92x = 197,268.12 × 91,743.12
4. Step 4: Simplify right side
   131,443.92x = 18,097,992,805.33
5. Step 5: Solve for x
   x = 18,097,992,805.33/131,443.92
6. Step 6: Final answer
   x = 137,686.04