Finding the Fourth Proportional to 105,520.32, 158,275.62 and 30,638.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105,520.32 : 158,275.62 = 30,638.79 : x
2. Step 2: Convert to fraction form
   105,520.32/158,275.62 = 30,638.79/x
3. Step 3: Cross multiply
   105,520.32x = 158,275.62 × 30,638.79
4. Step 4: Simplify right side
   105,520.32x = 4,849,373,483.30
5. Step 5: Solve for x
   x = 4,849,373,483.30/105,520.32
6. Step 6: Final answer
   x = 45,956.77