Finding the Fourth Proportional to 89.83, 123.69 and 73.63

Step by Step Solution

1. Step 1: Write the proportion equation
   89.83 : 123.69 = 73.63 : x
2. Step 2: Convert to fraction form
   89.83/123.69 = 73.63/x
3. Step 3: Cross multiply
   89.83x = 123.69 × 73.63
4. Step 4: Simplify right side
   89.83x = 9,107.29
5. Step 5: Solve for x
   x = 9,107.29/89.83
6. Step 6: Final answer
   x = 101.38