Finding the Fourth Proportional to 70,158.45, 105,238.04 and 20,238.83

Step by Step Solution

1. Step 1: Write the proportion equation
   70,158.45 : 105,238.04 = 20,238.83 : x
2. Step 2: Convert to fraction form
   70,158.45/105,238.04 = 20,238.83/x
3. Step 3: Cross multiply
   70,158.45x = 105,238.04 × 20,238.83
4. Step 4: Simplify right side
   70,158.45x = 2,129,894,568.35
5. Step 5: Solve for x
   x = 2,129,894,568.35/70,158.45
6. Step 6: Final answer
   x = 30,358.35