Finding the Fourth Proportional to 89.58, 123.50 and 73.98

Step by Step Solution

1. Step 1: Write the proportion equation
   89.58 : 123.50 = 73.98 : x
2. Step 2: Convert to fraction form
   89.58/123.50 = 73.98/x
3. Step 3: Cross multiply
   89.58x = 123.50 × 73.98
4. Step 4: Simplify right side
   89.58x = 9,136.53
5. Step 5: Solve for x
   x = 9,136.53/89.58
6. Step 6: Final answer
   x = 101.99