Finding the Fourth Proportional to 82,189.06, 123,262.81 and 42,185.65

Step by Step Solution

1. Step 1: Write the proportion equation
   82,189.06 : 123,262.81 = 42,185.65 : x
2. Step 2: Convert to fraction form
   82,189.06/123,262.81 = 42,185.65/x
3. Step 3: Cross multiply
   82,189.06x = 123,262.81 × 42,185.65
4. Step 4: Simplify right side
   82,189.06x = 5,199,921,760.68
5. Step 5: Solve for x
   x = 5,199,921,760.68/82,189.06
6. Step 6: Final answer
   x = 63,267.81