Finding the Fourth Proportional to 42,102.19, 58,075.81 and 30,757.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42,102.19 : 58,075.81 = 30,757.83 : x
2. Step 2: Convert to fraction form
   42,102.19/58,075.81 = 30,757.83/x
3. Step 3: Cross multiply
   42,102.19x = 58,075.81 × 30,757.83
4. Step 4: Simplify right side
   42,102.19x = 1,786,285,891.09
5. Step 5: Solve for x
   x = 1,786,285,891.09/42,102.19
6. Step 6: Final answer
   x = 42,427.39