Finding the Fourth Proportional to 76,302, 105,297.48 and 42,768.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,302 : 105,297.48 = 42,768.72 : x
2. Step 2: Convert to fraction form
   76,302/105,297.48 = 42,768.72/x
3. Step 3: Cross multiply
   76,302x = 105,297.48 × 42,768.72
4. Step 4: Simplify right side
   76,302x = 4,503,438,438.83
5. Step 5: Solve for x
   x = 4,503,438,438.83/76,302
6. Step 6: Final answer
   x = 59,021.24