Finding the Fourth Proportional to 219,100.96, 302,354.22 and 123,605.20

Step by Step Solution

1. Step 1: Write the proportion equation
   219,100.96 : 302,354.22 = 123,605.20 : x
2. Step 2: Convert to fraction form
   219,100.96/302,354.22 = 123,605.20/x
3. Step 3: Cross multiply
   219,100.96x = 302,354.22 × 123,605.20
4. Step 4: Simplify right side
   219,100.96x = 37,372,553,833.94
5. Step 5: Solve for x
   x = 37,372,553,833.94/219,100.96
6. Step 6: Final answer
   x = 170,572.30