Finding the Fourth Proportional to 76,668.56, 105,802.59 and 42,676.32

Step by Step Solution

1. Step 1: Write the proportion equation
   76,668.56 : 105,802.59 = 42,676.32 : x
2. Step 2: Convert to fraction form
   76,668.56/105,802.59 = 42,676.32/x
3. Step 3: Cross multiply
   76,668.56x = 105,802.59 × 42,676.32
4. Step 4: Simplify right side
   76,668.56x = 4,515,265,187.67
5. Step 5: Solve for x
   x = 4,515,265,187.67/76,668.56
6. Step 6: Final answer
   x = 58,893.31