Finding the Fourth Proportional to 269,182.35, 403,828.20 and 91,707.30

Step by Step Solution

1. Step 1: Write the proportion equation
   269,182.35 : 403,828.20 = 91,707.30 : x
2. Step 2: Convert to fraction form
   269,182.35/403,828.20 = 91,707.30/x
3. Step 3: Cross multiply
   269,182.35x = 403,828.20 × 91,707.30
4. Step 4: Simplify right side
   269,182.35x = 37,033,993,885.86
5. Step 5: Solve for x
   x = 37,033,993,885.86/269,182.35
6. Step 6: Final answer
   x = 137,579.58