Finding the Fourth Proportional to 42,030.88, 63,046.52 and 12,449.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,030.88 : 63,046.52 = 12,449.28 : x
2. Step 2: Convert to fraction form
   42,030.88/63,046.52 = 12,449.28/x
3. Step 3: Cross multiply
   42,030.88x = 63,046.52 × 12,449.28
4. Step 4: Simplify right side
   42,030.88x = 784,883,780.51
5. Step 5: Solve for x
   x = 784,883,780.51/42,030.88
6. Step 6: Final answer
   x = 18,673.98