Finding the Fourth Proportional to 91.73, 125.89 and 83.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91.73 : 125.89 = 83.50 : x
2. Step 2: Convert to fraction form
   91.73/125.89 = 83.50/x
3. Step 3: Cross multiply
   91.73x = 125.89 × 83.50
4. Step 4: Simplify right side
   91.73x = 10,511.29
5. Step 5: Solve for x
   x = 10,511.29/91.73
6. Step 6: Final answer
   x = 114.59