Finding the Fourth Proportional to 92.94, 128.25 and 56.10

Step by Step Solution

1. Step 1: Write the proportion equation
   92.94 : 128.25 = 56.10 : x
2. Step 2: Convert to fraction form
   92.94/128.25 = 56.10/x
3. Step 3: Cross multiply
   92.94x = 128.25 × 56.10
4. Step 4: Simplify right side
   92.94x = 7,194.83
5. Step 5: Solve for x
   x = 7,194.83/92.94
6. Step 6: Final answer
   x = 77.41