Finding the Fourth Proportional to 266,976.59, 400,401.77 and 98,405.33

Step by Step Solution

1. Step 1: Write the proportion equation
   266,976.59 : 400,401.77 = 98,405.33 : x
2. Step 2: Convert to fraction form
   266,976.59/400,401.77 = 98,405.33/x
3. Step 3: Cross multiply
   266,976.59x = 400,401.77 × 98,405.33
4. Step 4: Simplify right side
   266,976.59x = 39,401,665,815.40
5. Step 5: Solve for x
   x = 39,401,665,815.40/266,976.59
6. Step 6: Final answer
   x = 147,584.72