Finding the Fourth Proportional to 82,149.98, 123,200.33 and 42,685.56

Step by Step Solution

1. Step 1: Write the proportion equation
   82,149.98 : 123,200.33 = 42,685.56 : x
2. Step 2: Convert to fraction form
   82,149.98/123,200.33 = 42,685.56/x
3. Step 3: Cross multiply
   82,149.98x = 123,200.33 × 42,685.56
4. Step 4: Simplify right side
   82,149.98x = 5,258,874,864.81
5. Step 5: Solve for x
   x = 5,258,874,864.81/82,149.98
6. Step 6: Final answer
   x = 64,015.54