Finding the Fourth Proportional to 92.99, 138.71 and 89.83

Step by Step Solution

1. Step 1: Write the proportion equation
   92.99 : 138.71 = 89.83 : x
2. Step 2: Convert to fraction form
   92.99/138.71 = 89.83/x
3. Step 3: Cross multiply
   92.99x = 138.71 × 89.83
4. Step 4: Simplify right side
   92.99x = 12,460.32
5. Step 5: Solve for x
   x = 12,460.32/92.99
6. Step 6: Final answer
   x = 134.00