Finding the Fourth Proportional to 76,075.83, 104,982.75 and 42,086.21

Step by Step Solution

1. Step 1: Write the proportion equation
   76,075.83 : 104,982.75 = 42,086.21 : x
2. Step 2: Convert to fraction form
   76,075.83/104,982.75 = 42,086.21/x
3. Step 3: Cross multiply
   76,075.83x = 104,982.75 × 42,086.21
4. Step 4: Simplify right side
   76,075.83x = 4,418,325,537.96
5. Step 5: Solve for x
   x = 4,418,325,537.96/76,075.83
6. Step 6: Final answer
   x = 58,077.91