Finding the Fourth Proportional to 42.93, 59.15 and 31.99

Step by Step Solution

1. Step 1: Write the proportion equation
   42.93 : 59.15 = 31.99 : x
2. Step 2: Convert to fraction form
   42.93/59.15 = 31.99/x
3. Step 3: Cross multiply
   42.93x = 59.15 × 31.99
4. Step 4: Simplify right side
   42.93x = 1,892.21
5. Step 5: Solve for x
   x = 1,892.21/42.93
6. Step 6: Final answer
   x = 44.08