Finding the Fourth Proportional to 105,398.20, 158,080.74 and 34,323.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,398.20 : 158,080.74 = 34,323.40 : x
2. Step 2: Convert to fraction form
   105,398.20/158,080.74 = 34,323.40/x
3. Step 3: Cross multiply
   105,398.20x = 158,080.74 × 34,323.40
4. Step 4: Simplify right side
   105,398.20x = 5,425,868,471.32
5. Step 5: Solve for x
   x = 5,425,868,471.32/105,398.20
6. Step 6: Final answer
   x = 51,479.71