Finding the Fourth Proportional to 99.83, 149.78 and 61.34

Step by Step Solution

1. Step 1: Write the proportion equation
   99.83 : 149.78 = 61.34 : x
2. Step 2: Convert to fraction form
   99.83/149.78 = 61.34/x
3. Step 3: Cross multiply
   99.83x = 149.78 × 61.34
4. Step 4: Simplify right side
   99.83x = 9,186.45
5. Step 5: Solve for x
   x = 9,186.45/99.83
6. Step 6: Final answer
   x = 92.03