Finding the Fourth Proportional to 266,256, 367,436.31 and 145,398.72

Step by Step Solution

1. Step 1: Write the proportion equation
   266,256 : 367,436.31 = 145,398.72 : x
2. Step 2: Convert to fraction form
   266,256/367,436.31 = 145,398.72/x
3. Step 3: Cross multiply
   266,256x = 367,436.31 × 145,398.72
4. Step 4: Simplify right side
   266,256x = 53,424,769,155.52
5. Step 5: Solve for x
   x = 53,424,769,155.52/266,256
6. Step 6: Final answer
   x = 200,651.89