Finding the Fourth Proportional to 105,823.72, 158,614.62 and 43,417

Step by Step Solution

1. Step 1: Write the proportion equation
   105,823.72 : 158,614.62 = 43,417 : x
2. Step 2: Convert to fraction form
   105,823.72/158,614.62 = 43,417/x
3. Step 3: Cross multiply
   105,823.72x = 158,614.62 × 43,417
4. Step 4: Simplify right side
   105,823.72x = 6,886,570,956.54
5. Step 5: Solve for x
   x = 6,886,570,956.54/105,823.72
6. Step 6: Final answer
   x = 65,075.87