Finding the Fourth Proportional to 89.83, 134.71 and 55.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89.83 : 134.71 = 55.60 : x
2. Step 2: Convert to fraction form
   89.83/134.71 = 55.60/x
3. Step 3: Cross multiply
   89.83x = 134.71 × 55.60
4. Step 4: Simplify right side
   89.83x = 7,490.47
5. Step 5: Solve for x
   x = 7,490.47/89.83
6. Step 6: Final answer
   x = 83.39