Finding the Fourth Proportional to 77,972.21, 107,601.71 and 42,162.24

Step by Step Solution

1. Step 1: Write the proportion equation
   77,972.21 : 107,601.71 = 42,162.24 : x
2. Step 2: Convert to fraction form
   77,972.21/107,601.71 = 42,162.24/x
3. Step 3: Cross multiply
   77,972.21x = 107,601.71 × 42,162.24
4. Step 4: Simplify right side
   77,972.21x = 4,536,729,121.43
5. Step 5: Solve for x
   x = 4,536,729,121.43/77,972.21
6. Step 6: Final answer
   x = 58,183.92