Finding the Fourth Proportional to 123,144.52, 169,826.06 and 77,743.62

Step by Step Solution

1. Step 1: Write the proportion equation
   123,144.52 : 169,826.06 = 77,743.62 : x
2. Step 2: Convert to fraction form
   123,144.52/169,826.06 = 77,743.62/x
3. Step 3: Cross multiply
   123,144.52x = 169,826.06 × 77,743.62
4. Step 4: Simplify right side
   123,144.52x = 13,202,892,674.74
5. Step 5: Solve for x
   x = 13,202,892,674.74/123,144.52
6. Step 6: Final answer
   x = 107,214.62