Finding the Fourth Proportional to 72.48, 100.02 and 42.99

Step by Step Solution

1. Step 1: Write the proportion equation
   72.48 : 100.02 = 42.99 : x
2. Step 2: Convert to fraction form
   72.48/100.02 = 42.99/x
3. Step 3: Cross multiply
   72.48x = 100.02 × 42.99
4. Step 4: Simplify right side
   72.48x = 4,299.14
5. Step 5: Solve for x
   x = 4,299.14/72.48
6. Step 6: Final answer
   x = 59.32