Finding the Fourth Proportional to 72.82, 100.06 and 65.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72.82 : 100.06 = 65.98 : x
2. Step 2: Convert to fraction form
   72.82/100.06 = 65.98/x
3. Step 3: Cross multiply
   72.82x = 100.06 × 65.98
4. Step 4: Simplify right side
   72.82x = 6,601.96
5. Step 5: Solve for x
   x = 6,601.96/72.82
6. Step 6: Final answer
   x = 90.66