Finding the Fourth Proportional to 42,768.68, 59,028.38 and 31,454.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,768.68 : 59,028.38 = 31,454.60 : x
2. Step 2: Convert to fraction form
   42,768.68/59,028.38 = 31,454.60/x
3. Step 3: Cross multiply
   42,768.68x = 59,028.38 × 31,454.60
4. Step 4: Simplify right side
   42,768.68x = 1,856,714,081.55
5. Step 5: Solve for x
   x = 1,856,714,081.55/42,768.68
6. Step 6: Final answer
   x = 43,412.94