Finding the Fourth Proportional to 42,399.78, 63,812.34 and 31,924.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42,399.78 : 63,812.34 = 31,924.08 : x
2. Step 2: Convert to fraction form
   42,399.78/63,812.34 = 31,924.08/x
3. Step 3: Cross multiply
   42,399.78x = 63,812.34 × 31,924.08
4. Step 4: Simplify right side
   42,399.78x = 2,037,150,247.15
5. Step 5: Solve for x
   x = 2,037,150,247.15/42,399.78
6. Step 6: Final answer
   x = 48,046.25