Finding the Fourth Proportional to 89.60, 123.72 and 60.62

Step by Step Solution

1. Step 1: Write the proportion equation
   89.60 : 123.72 = 60.62 : x
2. Step 2: Convert to fraction form
   89.60/123.72 = 60.62/x
3. Step 3: Cross multiply
   89.60x = 123.72 × 60.62
4. Step 4: Simplify right side
   89.60x = 7,499.91
5. Step 5: Solve for x
   x = 7,499.91/89.60
6. Step 6: Final answer
   x = 83.70