Finding the Fourth Proportional to 159,402.30, 220,034.82 and 105,705.30

Step by Step Solution

1. Step 1: Write the proportion equation
   159,402.30 : 220,034.82 = 105,705.30 : x
2. Step 2: Convert to fraction form
   159,402.30/220,034.82 = 105,705.30/x
3. Step 3: Cross multiply
   159,402.30x = 220,034.82 × 105,705.30
4. Step 4: Simplify right side
   159,402.30x = 23,258,846,658.55
5. Step 5: Solve for x
   x = 23,258,846,658.55/159,402.30
6. Step 6: Final answer
   x = 145,912.87