Finding the Fourth Proportional to 141.94, 196.00 and 89.58

Step by Step Solution

1. Step 1: Write the proportion equation
   141.94 : 196.00 = 89.58 : x
2. Step 2: Convert to fraction form
   141.94/196.00 = 89.58/x
3. Step 3: Cross multiply
   141.94x = 196.00 × 89.58
4. Step 4: Simplify right side
   141.94x = 17,557.59
5. Step 5: Solve for x
   x = 17,557.59/141.94
6. Step 6: Final answer
   x = 123.70