Finding the Fourth Proportional to 269,619.84, 404,429.90 and 92,128.59

Step by Step Solution

1. Step 1: Write the proportion equation
   269,619.84 : 404,429.90 = 92,128.59 : x
2. Step 2: Convert to fraction form
   269,619.84/404,429.90 = 92,128.59/x
3. Step 3: Cross multiply
   269,619.84x = 404,429.90 × 92,128.59
4. Step 4: Simplify right side
   269,619.84x = 37,259,555,980.20
5. Step 5: Solve for x
   x = 37,259,555,980.20/269,619.84
6. Step 6: Final answer
   x = 138,192.93