Finding the Fourth Proportional to 109,520.69, 164,210.42 and 42,967.55

Step by Step Solution

1. Step 1: Write the proportion equation
   109,520.69 : 164,210.42 = 42,967.55 : x
2. Step 2: Convert to fraction form
   109,520.69/164,210.42 = 42,967.55/x
3. Step 3: Cross multiply
   109,520.69x = 164,210.42 × 42,967.55
4. Step 4: Simplify right side
   109,520.69x = 7,055,718,395.98
5. Step 5: Solve for x
   x = 7,055,718,395.98/109,520.69
6. Step 6: Final answer
   x = 64,423.61