Finding the Fourth Proportional to 61.02, 91.18 and 59.88

Step by Step Solution

1. Step 1: Write the proportion equation
   61.02 : 91.18 = 59.88 : x
2. Step 2: Convert to fraction form
   61.02/91.18 = 59.88/x
3. Step 3: Cross multiply
   61.02x = 91.18 × 59.88
4. Step 4: Simplify right side
   61.02x = 5,459.86
5. Step 5: Solve for x
   x = 5,459.86/61.02
6. Step 6: Final answer
   x = 89.48