Finding the Fourth Proportional to 91.99, 127.03 and 59.30

Step by Step Solution

1. Step 1: Write the proportion equation
   91.99 : 127.03 = 59.30 : x
2. Step 2: Convert to fraction form
   91.99/127.03 = 59.30/x
3. Step 3: Cross multiply
   91.99x = 127.03 × 59.30
4. Step 4: Simplify right side
   91.99x = 7,533.03
5. Step 5: Solve for x
   x = 7,533.03/91.99
6. Step 6: Final answer
   x = 81.89