Finding the Fourth Proportional to 99.18, 148.38 and 61.98

Step by Step Solution

1. Step 1: Write the proportion equation
   99.18 : 148.38 = 61.98 : x
2. Step 2: Convert to fraction form
   99.18/148.38 = 61.98/x
3. Step 3: Cross multiply
   99.18x = 148.38 × 61.98
4. Step 4: Simplify right side
   99.18x = 9,196.59
5. Step 5: Solve for x
   x = 9,196.59/99.18
6. Step 6: Final answer
   x = 92.73