Finding the Fourth Proportional to 122,479.48, 169,009.50 and 74,744.56

Step by Step Solution

1. Step 1: Write the proportion equation
   122,479.48 : 169,009.50 = 74,744.56 : x
2. Step 2: Convert to fraction form
   122,479.48/169,009.50 = 74,744.56/x
3. Step 3: Cross multiply
   122,479.48x = 169,009.50 × 74,744.56
4. Step 4: Simplify right side
   122,479.48x = 12,632,540,713.32
5. Step 5: Solve for x
   x = 12,632,540,713.32/122,479.48
6. Step 6: Final answer
   x = 103,140.06