Finding the Fourth Proportional to 267,208.96, 400,830.72 and 89,708.80

Step by Step Solution

1. Step 1: Write the proportion equation
   267,208.96 : 400,830.72 = 89,708.80 : x
2. Step 2: Convert to fraction form
   267,208.96/400,830.72 = 89,708.80/x
3. Step 3: Cross multiply
   267,208.96x = 400,830.72 × 89,708.80
4. Step 4: Simplify right side
   267,208.96x = 35,958,042,894.34
5. Step 5: Solve for x
   x = 35,958,042,894.34/267,208.96
6. Step 6: Final answer
   x = 134,569.00