Finding the Fourth Proportional to 71,601.33, 107,393.76 and 19,015.05

Step by Step Solution

1. Step 1: Write the proportion equation
   71,601.33 : 107,393.76 = 19,015.05 : x
2. Step 2: Convert to fraction form
   71,601.33/107,393.76 = 19,015.05/x
3. Step 3: Cross multiply
   71,601.33x = 107,393.76 × 19,015.05
4. Step 4: Simplify right side
   71,601.33x = 2,042,097,716.09
5. Step 5: Solve for x
   x = 2,042,097,716.09/71,601.33
6. Step 6: Final answer
   x = 28,520.39