Finding the Fourth Proportional to 73.08, 100.72 and 59.20

Step by Step Solution

1. Step 1: Write the proportion equation
   73.08 : 100.72 = 59.20 : x
2. Step 2: Convert to fraction form
   73.08/100.72 = 59.20/x
3. Step 3: Cross multiply
   73.08x = 100.72 × 59.20
4. Step 4: Simplify right side
   73.08x = 5,962.62
5. Step 5: Solve for x
   x = 5,962.62/73.08
6. Step 6: Final answer
   x = 81.59