Finding the Fourth Proportional to 72.62, 100.14 and 53.07

Step by Step Solution

1. Step 1: Write the proportion equation
   72.62 : 100.14 = 53.07 : x
2. Step 2: Convert to fraction form
   72.62/100.14 = 53.07/x
3. Step 3: Cross multiply
   72.62x = 100.14 × 53.07
4. Step 4: Simplify right side
   72.62x = 5,314.43
5. Step 5: Solve for x
   x = 5,314.43/72.62
6. Step 6: Final answer
   x = 73.18