Finding the Fourth Proportional to 109,560.50, 164,230.03 and 42,974.55

Step by Step Solution

1. Step 1: Write the proportion equation
   109,560.50 : 164,230.03 = 42,974.55 : x
2. Step 2: Convert to fraction form
   109,560.50/164,230.03 = 42,974.55/x
3. Step 3: Cross multiply
   109,560.50x = 164,230.03 × 42,974.55
4. Step 4: Simplify right side
   109,560.50x = 7,057,711,689.45
5. Step 5: Solve for x
   x = 7,057,711,689.45/109,560.50
6. Step 6: Final answer
   x = 64,418.40