Finding the Fourth Proportional to 90,641.81, 125,105.69 and 50,369.42

Step by Step Solution

1. Step 1: Write the proportion equation
   90,641.81 : 125,105.69 = 50,369.42 : x
2. Step 2: Convert to fraction form
   90,641.81/125,105.69 = 50,369.42/x
3. Step 3: Cross multiply
   90,641.81x = 125,105.69 × 50,369.42
4. Step 4: Simplify right side
   90,641.81x = 6,301,500,544.39
5. Step 5: Solve for x
   x = 6,301,500,544.39/90,641.81
6. Step 6: Final answer
   x = 69,520.91