Finding the Fourth Proportional to 269,196.75, 371,491.55 and 156,085.11

Step by Step Solution

1. Step 1: Write the proportion equation
   269,196.75 : 371,491.55 = 156,085.11 : x
2. Step 2: Convert to fraction form
   269,196.75/371,491.55 = 156,085.11/x
3. Step 3: Cross multiply
   269,196.75x = 371,491.55 × 156,085.11
4. Step 4: Simplify right side
   269,196.75x = 57,984,298,665.39
5. Step 5: Solve for x
   x = 57,984,298,665.39/269,196.75
6. Step 6: Final answer
   x = 215,397.47