Finding the Fourth Proportional to 100.71, 150.98 and 49.30

Step by Step Solution

1. Step 1: Write the proportion equation
   100.71 : 150.98 = 49.30 : x
2. Step 2: Convert to fraction form
   100.71/150.98 = 49.30/x
3. Step 3: Cross multiply
   100.71x = 150.98 × 49.30
4. Step 4: Simplify right side
   100.71x = 7,443.31
5. Step 5: Solve for x
   x = 7,443.31/100.71
6. Step 6: Final answer
   x = 73.91