Finding the Fourth Proportional to 288,300.71, 397,855.68 and 160,980.86

Step by Step Solution

1. Step 1: Write the proportion equation
   288,300.71 : 397,855.68 = 160,980.86 : x
2. Step 2: Convert to fraction form
   288,300.71/397,855.68 = 160,980.86/x
3. Step 3: Cross multiply
   288,300.71x = 397,855.68 × 160,980.86
4. Step 4: Simplify right side
   288,300.71x = 64,047,146,929.33
5. Step 5: Solve for x
   x = 64,047,146,929.33/288,300.71
6. Step 6: Final answer
   x = 222,153.97