Finding the Fourth Proportional to 93.15, 128.52 and 55.82

Step by Step Solution

1. Step 1: Write the proportion equation
   93.15 : 128.52 = 55.82 : x
2. Step 2: Convert to fraction form
   93.15/128.52 = 55.82/x
3. Step 3: Cross multiply
   93.15x = 128.52 × 55.82
4. Step 4: Simplify right side
   93.15x = 7,173.34
5. Step 5: Solve for x
   x = 7,173.34/93.15
6. Step 6: Final answer
   x = 77.01