Finding the Fourth Proportional to 99.83, 149.69 and 63.98

Step by Step Solution

1. Step 1: Write the proportion equation
   99.83 : 149.69 = 63.98 : x
2. Step 2: Convert to fraction form
   99.83/149.69 = 63.98/x
3. Step 3: Cross multiply
   99.83x = 149.69 × 63.98
4. Step 4: Simplify right side
   99.83x = 9,577.70
5. Step 5: Solve for x
   x = 9,577.70/99.83
6. Step 6: Final answer
   x = 95.94