Finding the Fourth Proportional to 133,665.30, 200,549.15 and 131,566.10

Step by Step Solution

1. Step 1: Write the proportion equation
   133,665.30 : 200,549.15 = 131,566.10 : x
2. Step 2: Convert to fraction form
   133,665.30/200,549.15 = 131,566.10/x
3. Step 3: Cross multiply
   133,665.30x = 200,549.15 × 131,566.10
4. Step 4: Simplify right side
   133,665.30x = 26,385,469,523.82
5. Step 5: Solve for x
   x = 26,385,469,523.82/133,665.30
6. Step 6: Final answer
   x = 197,399.55