Finding the Fourth Proportional to 269,238.40, 403,739.52 and 91,696.48

Step by Step Solution

1. Step 1: Write the proportion equation
   269,238.40 : 403,739.52 = 91,696.48 : x
2. Step 2: Convert to fraction form
   269,238.40/403,739.52 = 91,696.48/x
3. Step 3: Cross multiply
   269,238.40x = 403,739.52 × 91,696.48
4. Step 4: Simplify right side
   269,238.40x = 37,021,492,820.89
5. Step 5: Solve for x
   x = 37,021,492,820.89/269,238.40
6. Step 6: Final answer
   x = 137,504.50