Finding the Fourth Proportional to 91,955.25, 137,128.17 and 91,114.45

Step by Step Solution

1. Step 1: Write the proportion equation
   91,955.25 : 137,128.17 = 91,114.45 : x
2. Step 2: Convert to fraction form
   91,955.25/137,128.17 = 91,114.45/x
3. Step 3: Cross multiply
   91,955.25x = 137,128.17 × 91,114.45
4. Step 4: Simplify right side
   91,955.25x = 12,494,357,787.92
5. Step 5: Solve for x
   x = 12,494,357,787.92/91,955.25
6. Step 6: Final answer
   x = 135,874.33