Finding the Fourth Proportional to 122,662.90, 169,304.61 and 74,956.42

Step by Step Solution

1. Step 1: Write the proportion equation
   122,662.90 : 169,304.61 = 74,956.42 : x
2. Step 2: Convert to fraction form
   122,662.90/169,304.61 = 74,956.42/x
3. Step 3: Cross multiply
   122,662.90x = 169,304.61 × 74,956.42
4. Step 4: Simplify right side
   122,662.90x = 12,690,467,455.10
5. Step 5: Solve for x
   x = 12,690,467,455.10/122,662.90
6. Step 6: Final answer
   x = 103,458.07