Finding the Fourth Proportional to 71,603.59, 107,410.57 and 21,687.58

Step by Step Solution

1. Step 1: Write the proportion equation
   71,603.59 : 107,410.57 = 21,687.58 : x
2. Step 2: Convert to fraction form
   71,603.59/107,410.57 = 21,687.58/x
3. Step 3: Cross multiply
   71,603.59x = 107,410.57 × 21,687.58
4. Step 4: Simplify right side
   71,603.59x = 2,329,475,329.72
5. Step 5: Solve for x
   x = 2,329,475,329.72/71,603.59
6. Step 6: Final answer
   x = 32,532.94