Finding the Fourth Proportional to 436.34, 654.50 and 111.69

Step by Step Solution

1. Step 1: Write the proportion equation
   436.34 : 654.50 = 111.69 : x
2. Step 2: Convert to fraction form
   436.34/654.50 = 111.69/x
3. Step 3: Cross multiply
   436.34x = 654.50 × 111.69
4. Step 4: Simplify right side
   436.34x = 73,100.55
5. Step 5: Solve for x
   x = 73,100.55/436.34
6. Step 6: Final answer
   x = 167.53