Finding the Fourth Proportional to 76,676.36, 105,814.35 and 42,225.14

Step by Step Solution

1. Step 1: Write the proportion equation
   76,676.36 : 105,814.35 = 42,225.14 : x
2. Step 2: Convert to fraction form
   76,676.36/105,814.35 = 42,225.14/x
3. Step 3: Cross multiply
   76,676.36x = 105,814.35 × 42,225.14
4. Step 4: Simplify right side
   76,676.36x = 4,468,025,213.69
5. Step 5: Solve for x
   x = 4,468,025,213.69/76,676.36
6. Step 6: Final answer
   x = 58,271.23