Finding the Fourth Proportional to 72.98, 100.72 and 45.35

Step by Step Solution

1. Step 1: Write the proportion equation
   72.98 : 100.72 = 45.35 : x
2. Step 2: Convert to fraction form
   72.98/100.72 = 45.35/x
3. Step 3: Cross multiply
   72.98x = 100.72 × 45.35
4. Step 4: Simplify right side
   72.98x = 4,567.96
5. Step 5: Solve for x
   x = 4,567.96/72.98
6. Step 6: Final answer
   x = 62.59