Finding the Fourth Proportional to 94.72, 130.71 and 55.91

Step by Step Solution

1. Step 1: Write the proportion equation
   94.72 : 130.71 = 55.91 : x
2. Step 2: Convert to fraction form
   94.72/130.71 = 55.91/x
3. Step 3: Cross multiply
   94.72x = 130.71 × 55.91
4. Step 4: Simplify right side
   94.72x = 7,308.00
5. Step 5: Solve for x
   x = 7,308.00/94.72
6. Step 6: Final answer
   x = 77.15