Finding the Fourth Proportional to 109,411.70, 164,130.98 and 42,843.06

Step by Step Solution

1. Step 1: Write the proportion equation
   109,411.70 : 164,130.98 = 42,843.06 : x
2. Step 2: Convert to fraction form
   109,411.70/164,130.98 = 42,843.06/x
3. Step 3: Cross multiply
   109,411.70x = 164,130.98 × 42,843.06
4. Step 4: Simplify right side
   109,411.70x = 7,031,873,209.78
5. Step 5: Solve for x
   x = 7,031,873,209.78/109,411.70
6. Step 6: Final answer
   x = 64,269.85