Finding the Fourth Proportional to 109,435.10, 164,031.15 and 42,853.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109,435.10 : 164,031.15 = 42,853.10 : x
2. Step 2: Convert to fraction form
   109,435.10/164,031.15 = 42,853.10/x
3. Step 3: Cross multiply
   109,435.10x = 164,031.15 × 42,853.10
4. Step 4: Simplify right side
   109,435.10x = 7,029,243,274.07
5. Step 5: Solve for x
   x = 7,029,243,274.07/109,435.10
6. Step 6: Final answer
   x = 64,232.07