Finding the Fourth Proportional to 267,216.42, 400,861.53 and 89,774.17

Step by Step Solution

1. Step 1: Write the proportion equation
   267,216.42 : 400,861.53 = 89,774.17 : x
2. Step 2: Convert to fraction form
   267,216.42/400,861.53 = 89,774.17/x
3. Step 3: Cross multiply
   267,216.42x = 400,861.53 × 89,774.17
4. Step 4: Simplify right side
   267,216.42x = 35,987,012,645.86
5. Step 5: Solve for x
   x = 35,987,012,645.86/267,216.42
6. Step 6: Final answer
   x = 134,673.66