Finding the Fourth Proportional to 99.03, 136.67 and 57.59

Step by Step Solution

1. Step 1: Write the proportion equation
   99.03 : 136.67 = 57.59 : x
2. Step 2: Convert to fraction form
   99.03/136.67 = 57.59/x
3. Step 3: Cross multiply
   99.03x = 136.67 × 57.59
4. Step 4: Simplify right side
   99.03x = 7,870.83
5. Step 5: Solve for x
   x = 7,870.83/99.03
6. Step 6: Final answer
   x = 79.48