Finding the Fourth Proportional to 288,978.52, 398,790.71 and 159,922.34

Step by Step Solution

1. Step 1: Write the proportion equation
   288,978.52 : 398,790.71 = 159,922.34 : x
2. Step 2: Convert to fraction form
   288,978.52/398,790.71 = 159,922.34/x
3. Step 3: Cross multiply
   288,978.52x = 398,790.71 × 159,922.34
4. Step 4: Simplify right side
   288,978.52x = 63,775,543,513.46
5. Step 5: Solve for x
   x = 63,775,543,513.46/288,978.52
6. Step 6: Final answer
   x = 220,693.02