Finding the Fourth Proportional to 143.89, 215.69 and 62.71

Step by Step Solution

1. Step 1: Write the proportion equation
   143.89 : 215.69 = 62.71 : x
2. Step 2: Convert to fraction form
   143.89/215.69 = 62.71/x
3. Step 3: Cross multiply
   143.89x = 215.69 × 62.71
4. Step 4: Simplify right side
   143.89x = 13,525.61
5. Step 5: Solve for x
   x = 13,525.61/143.89
6. Step 6: Final answer
   x = 94.00