Finding the Fourth Proportional to 61.29, 92.42 and 57.59

Step by Step Solution

1. Step 1: Write the proportion equation
   61.29 : 92.42 = 57.59 : x
2. Step 2: Convert to fraction form
   61.29/92.42 = 57.59/x
3. Step 3: Cross multiply
   61.29x = 92.42 × 57.59
4. Step 4: Simplify right side
   61.29x = 5,321.72
5. Step 5: Solve for x
   x = 5,321.72/61.29
6. Step 6: Final answer
   x = 86.83