Finding the Fourth Proportional to 99.83, 149.63 and 38.94

Step by Step Solution

1. Step 1: Write the proportion equation
   99.83 : 149.63 = 38.94 : x
2. Step 2: Convert to fraction form
   99.83/149.63 = 38.94/x
3. Step 3: Cross multiply
   99.83x = 149.63 × 38.94
4. Step 4: Simplify right side
   99.83x = 5,826.40
5. Step 5: Solve for x
   x = 5,826.40/99.83
6. Step 6: Final answer
   x = 58.37