Finding the Fourth Proportional to 99.83, 149.51 and 98.15

Step by Step Solution

1. Step 1: Write the proportion equation
   99.83 : 149.51 = 98.15 : x
2. Step 2: Convert to fraction form
   99.83/149.51 = 98.15/x
3. Step 3: Cross multiply
   99.83x = 149.51 × 98.15
4. Step 4: Simplify right side
   99.83x = 14,674.29
5. Step 5: Solve for x
   x = 14,674.29/99.83
6. Step 6: Final answer
   x = 147.00