Finding the Fourth Proportional to 266,992.89, 400,549.31 and 89,495.35

Step by Step Solution

1. Step 1: Write the proportion equation
   266,992.89 : 400,549.31 = 89,495.35 : x
2. Step 2: Convert to fraction form
   266,992.89/400,549.31 = 89,495.35/x
3. Step 3: Cross multiply
   266,992.89x = 400,549.31 × 89,495.35
4. Step 4: Simplify right side
   266,992.89x = 35,847,300,690.71
5. Step 5: Solve for x
   x = 35,847,300,690.71/266,992.89
6. Step 6: Final answer
   x = 134,263.13