Finding the Fourth Proportional to 91,274.47, 125,815.87 and 83,942.55

Step by Step Solution

1. Step 1: Write the proportion equation
   91,274.47 : 125,815.87 = 83,942.55 : x
2. Step 2: Convert to fraction form
   91,274.47/125,815.87 = 83,942.55/x
3. Step 3: Cross multiply
   91,274.47x = 125,815.87 × 83,942.55
4. Step 4: Simplify right side
   91,274.47x = 10,561,304,958.27
5. Step 5: Solve for x
   x = 10,561,304,958.27/91,274.47
6. Step 6: Final answer
   x = 115,709.30