Finding the Fourth Proportional to 109,509.10, 164,142.15 and 42,927.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109,509.10 : 164,142.15 = 42,927.10 : x
2. Step 2: Convert to fraction form
   109,509.10/164,142.15 = 42,927.10/x
3. Step 3: Cross multiply
   109,509.10x = 164,142.15 × 42,927.10
4. Step 4: Simplify right side
   109,509.10x = 7,046,146,487.27
5. Step 5: Solve for x
   x = 7,046,146,487.27/109,509.10
6. Step 6: Final answer
   x = 64,343.02