Finding the Fourth Proportional to 72,357.26, 99,853.31 and 42,163.29

Step by Step Solution

1. Step 1: Write the proportion equation
   72,357.26 : 99,853.31 = 42,163.29 : x
2. Step 2: Convert to fraction form
   72,357.26/99,853.31 = 42,163.29/x
3. Step 3: Cross multiply
   72,357.26x = 99,853.31 × 42,163.29
4. Step 4: Simplify right side
   72,357.26x = 4,210,144,172.40
5. Step 5: Solve for x
   x = 4,210,144,172.40/72,357.26
6. Step 6: Final answer
   x = 58,185.52