Finding the Fourth Proportional to 72.50, 100.06 and 43.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72.50 : 100.06 = 43.42 : x
2. Step 2: Convert to fraction form
   72.50/100.06 = 43.42/x
3. Step 3: Cross multiply
   72.50x = 100.06 × 43.42
4. Step 4: Simplify right side
   72.50x = 4,344.61
5. Step 5: Solve for x
   x = 4,344.61/72.50
6. Step 6: Final answer
   x = 59.93