Finding the Fourth Proportional to 122,196.56, 168,630.52 and 74,439.76

Step by Step Solution

1. Step 1: Write the proportion equation
   122,196.56 : 168,630.52 = 74,439.76 : x
2. Step 2: Convert to fraction form
   122,196.56/168,630.52 = 74,439.76/x
3. Step 3: Cross multiply
   122,196.56x = 168,630.52 × 74,439.76
4. Step 4: Simplify right side
   122,196.56x = 12,552,815,437.48
5. Step 5: Solve for x
   x = 12,552,815,437.48/122,196.56
6. Step 6: Final answer
   x = 102,726.42