Finding the Fourth Proportional to 59.94, 90.18 and 56.70

Step by Step Solution

1. Step 1: Write the proportion equation
   59.94 : 90.18 = 56.70 : x
2. Step 2: Convert to fraction form
   59.94/90.18 = 56.70/x
3. Step 3: Cross multiply
   59.94x = 90.18 × 56.70
4. Step 4: Simplify right side
   59.94x = 5,113.21
5. Step 5: Solve for x
   x = 5,113.21/59.94
6. Step 6: Final answer
   x = 85.31