Finding the Fourth Proportional to 91.02, 125.59 and 56.54

Step by Step Solution

1. Step 1: Write the proportion equation
   91.02 : 125.59 = 56.54 : x
2. Step 2: Convert to fraction form
   91.02/125.59 = 56.54/x
3. Step 3: Cross multiply
   91.02x = 125.59 × 56.54
4. Step 4: Simplify right side
   91.02x = 7,100.86
5. Step 5: Solve for x
   x = 7,100.86/91.02
6. Step 6: Final answer
   x = 78.01