Finding the Fourth Proportional to 76,081.70, 104,995.83 and 42,089.60

Step by Step Solution

1. Step 1: Write the proportion equation
   76,081.70 : 104,995.83 = 42,089.60 : x
2. Step 2: Convert to fraction form
   76,081.70/104,995.83 = 42,089.60/x
3. Step 3: Cross multiply
   76,081.70x = 104,995.83 × 42,089.60
4. Step 4: Simplify right side
   76,081.70x = 4,419,232,486.37
5. Step 5: Solve for x
   x = 4,419,232,486.37/76,081.70
6. Step 6: Final answer
   x = 58,085.35