Finding the Fourth Proportional to 93.93, 140.89 and 42.55

Step by Step Solution

1. Step 1: Write the proportion equation
   93.93 : 140.89 = 42.55 : x
2. Step 2: Convert to fraction form
   93.93/140.89 = 42.55/x
3. Step 3: Cross multiply
   93.93x = 140.89 × 42.55
4. Step 4: Simplify right side
   93.93x = 5,994.87
5. Step 5: Solve for x
   x = 5,994.87/93.93
6. Step 6: Final answer
   x = 63.82