Finding the Fourth Proportional to 72.08, 108.06 and 46.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72.08 : 108.06 = 46.56 : x
2. Step 2: Convert to fraction form
   72.08/108.06 = 46.56/x
3. Step 3: Cross multiply
   72.08x = 108.06 × 46.56
4. Step 4: Simplify right side
   72.08x = 5,031.27
5. Step 5: Solve for x
   x = 5,031.27/72.08
6. Step 6: Final answer
   x = 69.80