Finding the Fourth Proportional to 91.94, 137.69 and 53.34

Step by Step Solution

1. Step 1: Write the proportion equation
   91.94 : 137.69 = 53.34 : x
2. Step 2: Convert to fraction form
   91.94/137.69 = 53.34/x
3. Step 3: Cross multiply
   91.94x = 137.69 × 53.34
4. Step 4: Simplify right side
   91.94x = 7,344.12
5. Step 5: Solve for x
   x = 7,344.12/91.94
6. Step 6: Final answer
   x = 79.88