Finding the Fourth Proportional to 93.39, 140.10 and 42.05

Step by Step Solution

1. Step 1: Write the proportion equation
   93.39 : 140.10 = 42.05 : x
2. Step 2: Convert to fraction form
   93.39/140.10 = 42.05/x
3. Step 3: Cross multiply
   93.39x = 140.10 × 42.05
4. Step 4: Simplify right side
   93.39x = 5,890.50
5. Step 5: Solve for x
   x = 5,890.50/93.39
6. Step 6: Final answer
   x = 63.07