Finding the Fourth Proportional to 50.51, 69.72 and 42.69

Step by Step Solution

1. Step 1: Write the proportion equation
   50.51 : 69.72 = 42.69 : x
2. Step 2: Convert to fraction form
   50.51/69.72 = 42.69/x
3. Step 3: Cross multiply
   50.51x = 69.72 × 42.69
4. Step 4: Simplify right side
   50.51x = 2,976.35
5. Step 5: Solve for x
   x = 2,976.35/50.51
6. Step 6: Final answer
   x = 58.93