Finding the Fourth Proportional to 266,771.48, 400,076.42 and 140,342.00

Step by Step Solution

1. Step 1: Write the proportion equation
   266,771.48 : 400,076.42 = 140,342.00 : x
2. Step 2: Convert to fraction form
   266,771.48/400,076.42 = 140,342.00/x
3. Step 3: Cross multiply
   266,771.48x = 400,076.42 × 140,342.00
4. Step 4: Simplify right side
   266,771.48x = 56,147,522,233.55
5. Step 5: Solve for x
   x = 56,147,522,233.55/266,771.48
6. Step 6: Final answer
   x = 210,470.49