Finding the Fourth Proportional to 105,508.30, 158,287.62 and 34,431.07

Step by Step Solution

1. Step 1: Write the proportion equation
   105,508.30 : 158,287.62 = 34,431.07 : x
2. Step 2: Convert to fraction form
   105,508.30/158,287.62 = 34,431.07/x
3. Step 3: Cross multiply
   105,508.30x = 158,287.62 × 34,431.07
4. Step 4: Simplify right side
   105,508.30x = 5,450,011,857.75
5. Step 5: Solve for x
   x = 5,450,011,857.75/105,508.30
6. Step 6: Final answer
   x = 51,654.82