Finding the Fourth Proportional to 105,404.52, 158,105.94 and 43,031.28

Step by Step Solution

1. Step 1: Write the proportion equation
   105,404.52 : 158,105.94 = 43,031.28 : x
2. Step 2: Convert to fraction form
   105,404.52/158,105.94 = 43,031.28/x
3. Step 3: Cross multiply
   105,404.52x = 158,105.94 × 43,031.28
4. Step 4: Simplify right side
   105,404.52x = 6,803,500,973.80
5. Step 5: Solve for x
   x = 6,803,500,973.80/105,404.52
6. Step 6: Final answer
   x = 64,546.58