Finding the Fourth Proportional to 91.31, 125.98 and 59.81

Step by Step Solution

1. Step 1: Write the proportion equation
   91.31 : 125.98 = 59.81 : x
2. Step 2: Convert to fraction form
   91.31/125.98 = 59.81/x
3. Step 3: Cross multiply
   91.31x = 125.98 × 59.81
4. Step 4: Simplify right side
   91.31x = 7,534.86
5. Step 5: Solve for x
   x = 7,534.86/91.31
6. Step 6: Final answer
   x = 82.52