Finding the Fourth Proportional to 76,657.34, 105,786.24 and 42,665.24

Step by Step Solution

1. Step 1: Write the proportion equation
   76,657.34 : 105,786.24 = 42,665.24 : x
2. Step 2: Convert to fraction form
   76,657.34/105,786.24 = 42,665.24/x
3. Step 3: Cross multiply
   76,657.34x = 105,786.24 × 42,665.24
4. Step 4: Simplify right side
   76,657.34x = 4,513,394,789.37
5. Step 5: Solve for x
   x = 4,513,394,789.37/76,657.34
6. Step 6: Final answer
   x = 58,877.53