Finding the Fourth Proportional to 99.83, 149.76 and 38.98

Step by Step Solution

1. Step 1: Write the proportion equation
   99.83 : 149.76 = 38.98 : x
2. Step 2: Convert to fraction form
   99.83/149.76 = 38.98/x
3. Step 3: Cross multiply
   99.83x = 149.76 × 38.98
4. Step 4: Simplify right side
   99.83x = 5,837.64
5. Step 5: Solve for x
   x = 5,837.64/99.83
6. Step 6: Final answer
   x = 58.48