Finding the Fourth Proportional to 131,643.86, 197,576.55 and 123,340.09

Step by Step Solution

1. Step 1: Write the proportion equation
   131,643.86 : 197,576.55 = 123,340.09 : x
2. Step 2: Convert to fraction form
   131,643.86/197,576.55 = 123,340.09/x
3. Step 3: Cross multiply
   131,643.86x = 197,576.55 × 123,340.09
4. Step 4: Simplify right side
   131,643.86x = 24,369,109,427.47
5. Step 5: Solve for x
   x = 24,369,109,427.47/131,643.86
6. Step 6: Final answer
   x = 185,113.92