Finding the Fourth Proportional to 82,293.80, 123,411.90 and 42,837.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,293.80 : 123,411.90 = 42,837.80 : x
2. Step 2: Convert to fraction form
   82,293.80/123,411.90 = 42,837.80/x
3. Step 3: Cross multiply
   82,293.80x = 123,411.90 × 42,837.80
4. Step 4: Simplify right side
   82,293.80x = 5,286,694,289.82
5. Step 5: Solve for x
   x = 5,286,694,289.82/82,293.80
6. Step 6: Final answer
   x = 64,241.71