Finding the Fourth Proportional to 267.35, 400.83 and 105.00

Step by Step Solution

1. Step 1: Write the proportion equation
   267.35 : 400.83 = 105.00 : x
2. Step 2: Convert to fraction form
   267.35/400.83 = 105.00/x
3. Step 3: Cross multiply
   267.35x = 400.83 × 105.00
4. Step 4: Simplify right side
   267.35x = 42,085.25
5. Step 5: Solve for x
   x = 42,085.25/267.35
6. Step 6: Final answer
   x = 157.42