Finding the Fourth Proportional to 83,689.33, 125,533.89 and 21,359.83

Step by Step Solution

1. Step 1: Write the proportion equation
   83,689.33 : 125,533.89 = 21,359.83 : x
2. Step 2: Convert to fraction form
   83,689.33/125,533.89 = 21,359.83/x
3. Step 3: Cross multiply
   83,689.33x = 125,533.89 × 21,359.83
4. Step 4: Simplify right side
   83,689.33x = 2,681,382,549.64
5. Step 5: Solve for x
   x = 2,681,382,549.64/83,689.33
6. Step 6: Final answer
   x = 32,039.72