Finding the Fourth Proportional to 89.83, 123.94 and 60.74

Step by Step Solution

1. Step 1: Write the proportion equation
   89.83 : 123.94 = 60.74 : x
2. Step 2: Convert to fraction form
   89.83/123.94 = 60.74/x
3. Step 3: Cross multiply
   89.83x = 123.94 × 60.74
4. Step 4: Simplify right side
   89.83x = 7,528.12
5. Step 5: Solve for x
   x = 7,528.12/89.83
6. Step 6: Final answer
   x = 83.80