Finding the Fourth Proportional to 100.88, 151.38 and 43.10

Step by Step Solution

1. Step 1: Write the proportion equation
   100.88 : 151.38 = 43.10 : x
2. Step 2: Convert to fraction form
   100.88/151.38 = 43.10/x
3. Step 3: Cross multiply
   100.88x = 151.38 × 43.10
4. Step 4: Simplify right side
   100.88x = 6,523.72
5. Step 5: Solve for x
   x = 6,523.72/100.88
6. Step 6: Final answer
   x = 64.67