Finding the Fourth Proportional to 388,285.98, 582,428.52 and 122,069.76

Step by Step Solution

1. Step 1: Write the proportion equation
   388,285.98 : 582,428.52 = 122,069.76 : x
2. Step 2: Convert to fraction form
   388,285.98/582,428.52 = 122,069.76/x
3. Step 3: Cross multiply
   388,285.98x = 582,428.52 × 122,069.76
4. Step 4: Simplify right side
   388,285.98x = 71,096,909,653.56
5. Step 5: Solve for x
   x = 71,096,909,653.56/388,285.98
6. Step 6: Final answer
   x = 183,104.50