Finding the Fourth Proportional to 61.60, 91.83 and 60.18

Step by Step Solution

1. Step 1: Write the proportion equation
   61.60 : 91.83 = 60.18 : x
2. Step 2: Convert to fraction form
   61.60/91.83 = 60.18/x
3. Step 3: Cross multiply
   61.60x = 91.83 × 60.18
4. Step 4: Simplify right side
   61.60x = 5,526.33
5. Step 5: Solve for x
   x = 5,526.33/61.60
6. Step 6: Final answer
   x = 89.71