Finding the Fourth Proportional to 72,357.38, 99,853.48 and 42,163.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,357.38 : 99,853.48 = 42,163.42 : x
2. Step 2: Convert to fraction form
   72,357.38/99,853.48 = 42,163.42/x
3. Step 3: Cross multiply
   72,357.38x = 99,853.48 × 42,163.42
4. Step 4: Simplify right side
   72,357.38x = 4,210,164,215.70
5. Step 5: Solve for x
   x = 4,210,164,215.70/72,357.38
6. Step 6: Final answer
   x = 58,185.69