Finding the Fourth Proportional to 100.10, 150.06 and 72.98

Step by Step Solution

1. Step 1: Write the proportion equation
   100.10 : 150.06 = 72.98 : x
2. Step 2: Convert to fraction form
   100.10/150.06 = 72.98/x
3. Step 3: Cross multiply
   100.10x = 150.06 × 72.98
4. Step 4: Simplify right side
   100.10x = 10,951.38
5. Step 5: Solve for x
   x = 10,951.38/100.10
6. Step 6: Final answer
   x = 109.40