Finding the Fourth Proportional to 89.02, 122.83 and 57.93

Step by Step Solution

1. Step 1: Write the proportion equation
   89.02 : 122.83 = 57.93 : x
2. Step 2: Convert to fraction form
   89.02/122.83 = 57.93/x
3. Step 3: Cross multiply
   89.02x = 122.83 × 57.93
4. Step 4: Simplify right side
   89.02x = 7,115.54
5. Step 5: Solve for x
   x = 7,115.54/89.02
6. Step 6: Final answer
   x = 79.93