Finding the Fourth Proportional to 76,315.42, 105,316.05 and 42,324.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,315.42 : 105,316.05 = 42,324.42 : x
2. Step 2: Convert to fraction form
   76,315.42/105,316.05 = 42,324.42/x
3. Step 3: Cross multiply
   76,315.42x = 105,316.05 × 42,324.42
4. Step 4: Simplify right side
   76,315.42x = 4,457,441,048.52
5. Step 5: Solve for x
   x = 4,457,441,048.52/76,315.42
6. Step 6: Final answer
   x = 58,408.13