Finding the Fourth Proportional to 71,359.38, 107,037.86 and 21,439.89

Step by Step Solution

1. Step 1: Write the proportion equation
   71,359.38 : 107,037.86 = 21,439.89 : x
2. Step 2: Convert to fraction form
   71,359.38/107,037.86 = 21,439.89/x
3. Step 3: Cross multiply
   71,359.38x = 107,037.86 × 21,439.89
4. Step 4: Simplify right side
   71,359.38x = 2,294,879,837.04
5. Step 5: Solve for x
   x = 2,294,879,837.04/71,359.38
6. Step 6: Final answer
   x = 32,159.47