Finding the Fourth Proportional to 71,322.88, 107,004.31 and 28,658.26

Step by Step Solution

1. Step 1: Write the proportion equation
   71,322.88 : 107,004.31 = 28,658.26 : x
2. Step 2: Convert to fraction form
   71,322.88/107,004.31 = 28,658.26/x
3. Step 3: Cross multiply
   71,322.88x = 107,004.31 × 28,658.26
4. Step 4: Simplify right side
   71,322.88x = 3,066,557,337.10
5. Step 5: Solve for x
   x = 3,066,557,337.10/71,322.88
6. Step 6: Final answer
   x = 42,995.42