Finding the Fourth Proportional to 89.61, 123.69 and 60.13

Step by Step Solution

1. Step 1: Write the proportion equation
   89.61 : 123.69 = 60.13 : x
2. Step 2: Convert to fraction form
   89.61/123.69 = 60.13/x
3. Step 3: Cross multiply
   89.61x = 123.69 × 60.13
4. Step 4: Simplify right side
   89.61x = 7,437.16
5. Step 5: Solve for x
   x = 7,437.16/89.61
6. Step 6: Final answer
   x = 83.00