Finding the Fourth Proportional to 388,834.80, 583,196.82 and 122,560.71

Step by Step Solution

1. Step 1: Write the proportion equation
   388,834.80 : 583,196.82 = 122,560.71 : x
2. Step 2: Convert to fraction form
   388,834.80/583,196.82 = 122,560.71/x
3. Step 3: Cross multiply
   388,834.80x = 583,196.82 × 122,560.71
4. Step 4: Simplify right side
   388,834.80x = 71,477,016,328.94
5. Step 5: Solve for x
   x = 71,477,016,328.94/388,834.80
6. Step 6: Final answer
   x = 183,823.61