Finding the Fourth Proportional to 101.98, 152.88 and 83.98

Step by Step Solution

1. Step 1: Write the proportion equation
   101.98 : 152.88 = 83.98 : x
2. Step 2: Convert to fraction form
   101.98/152.88 = 83.98/x
3. Step 3: Cross multiply
   101.98x = 152.88 × 83.98
4. Step 4: Simplify right side
   101.98x = 12,838.86
5. Step 5: Solve for x
   x = 12,838.86/101.98
6. Step 6: Final answer
   x = 125.90