Finding the Fourth Proportional to 127.50, 175.93 and 83.89

Step by Step Solution

1. Step 1: Write the proportion equation
   127.50 : 175.93 = 83.89 : x
2. Step 2: Convert to fraction form
   127.50/175.93 = 83.89/x
3. Step 3: Cross multiply
   127.50x = 175.93 × 83.89
4. Step 4: Simplify right side
   127.50x = 14,758.77
5. Step 5: Solve for x
   x = 14,758.77/127.50
6. Step 6: Final answer
   x = 115.76