Finding the Fourth Proportional to 89.83, 123.86 and 62.23

Step by Step Solution

1. Step 1: Write the proportion equation
   89.83 : 123.86 = 62.23 : x
2. Step 2: Convert to fraction form
   89.83/123.86 = 62.23/x
3. Step 3: Cross multiply
   89.83x = 123.86 × 62.23
4. Step 4: Simplify right side
   89.83x = 7,707.81
5. Step 5: Solve for x
   x = 7,707.81/89.83
6. Step 6: Final answer
   x = 85.80