Finding the Fourth Proportional to 76,306.34, 105,309 and 42,325.52

Step by Step Solution

1. Step 1: Write the proportion equation
   76,306.34 : 105,309 = 42,325.52 : x
2. Step 2: Convert to fraction form
   76,306.34/105,309 = 42,325.52/x
3. Step 3: Cross multiply
   76,306.34x = 105,309 × 42,325.52
4. Step 4: Simplify right side
   76,306.34x = 4,457,258,185.68
5. Step 5: Solve for x
   x = 4,457,258,185.68/76,306.34
6. Step 6: Final answer
   x = 58,412.68