Finding the Fourth Proportional to 42,498.07, 63,704.07 and 21,374.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,498.07 : 63,704.07 = 21,374.28 : x
2. Step 2: Convert to fraction form
   42,498.07/63,704.07 = 21,374.28/x
3. Step 3: Cross multiply
   42,498.07x = 63,704.07 × 21,374.28
4. Step 4: Simplify right side
   42,498.07x = 1,361,628,629.32
5. Step 5: Solve for x
   x = 1,361,628,629.32/42,498.07
6. Step 6: Final answer
   x = 32,039.78