Finding the Fourth Proportional to 104.25, 155.52 and 100.51

Step by Step Solution

1. Step 1: Write the proportion equation
   104.25 : 155.52 = 100.51 : x
2. Step 2: Convert to fraction form
   104.25/155.52 = 100.51/x
3. Step 3: Cross multiply
   104.25x = 155.52 × 100.51
4. Step 4: Simplify right side
   104.25x = 15,631.32
5. Step 5: Solve for x
   x = 15,631.32/104.25
6. Step 6: Final answer
   x = 149.94