Finding the Fourth Proportional to 82,532.64, 123,799.52 and 20,203.36

Step by Step Solution

1. Step 1: Write the proportion equation
   82,532.64 : 123,799.52 = 20,203.36 : x
2. Step 2: Convert to fraction form
   82,532.64/123,799.52 = 20,203.36/x
3. Step 3: Cross multiply
   82,532.64x = 123,799.52 × 20,203.36
4. Step 4: Simplify right side
   82,532.64x = 2,501,166,270.39
5. Step 5: Solve for x
   x = 2,501,166,270.39/82,532.64
6. Step 6: Final answer
   x = 30,305.18