Finding the Fourth Proportional to 42.69, 58.98 and 31.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42.69 : 58.98 = 31.83 : x
2. Step 2: Convert to fraction form
   42.69/58.98 = 31.83/x
3. Step 3: Cross multiply
   42.69x = 58.98 × 31.83
4. Step 4: Simplify right side
   42.69x = 1,877.33
5. Step 5: Solve for x
   x = 1,877.33/42.69
6. Step 6: Final answer
   x = 43.98