Finding the Fourth Proportional to 76,247.38, 105,221.97 and 42,256.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,247.38 : 105,221.97 = 42,256.42 : x
2. Step 2: Convert to fraction form
   76,247.38/105,221.97 = 42,256.42/x
3. Step 3: Cross multiply
   76,247.38x = 105,221.97 × 42,256.42
4. Step 4: Simplify right side
   76,247.38x = 4,446,303,757.55
5. Step 5: Solve for x
   x = 4,446,303,757.55/76,247.38
6. Step 6: Final answer
   x = 58,314.18