Finding the Fourth Proportional to 82.22, 123.28 and 53.34

Step by Step Solution

1. Step 1: Write the proportion equation
   82.22 : 123.28 = 53.34 : x
2. Step 2: Convert to fraction form
   82.22/123.28 = 53.34/x
3. Step 3: Cross multiply
   82.22x = 123.28 × 53.34
4. Step 4: Simplify right side
   82.22x = 6,575.82
5. Step 5: Solve for x
   x = 6,575.82/82.22
6. Step 6: Final answer
   x = 79.98