Finding the Fourth Proportional to 109,424.29, 164,150.78 and 42,855.76

Step by Step Solution

1. Step 1: Write the proportion equation
   109,424.29 : 164,150.78 = 42,855.76 : x
2. Step 2: Convert to fraction form
   109,424.29/164,150.78 = 42,855.76/x
3. Step 3: Cross multiply
   109,424.29x = 164,150.78 × 42,855.76
4. Step 4: Simplify right side
   109,424.29x = 7,034,807,391.22
5. Step 5: Solve for x
   x = 7,034,807,391.22/109,424.29
6. Step 6: Final answer
   x = 64,289.27