Finding the Fourth Proportional to 42,498.46, 63,754.98 and 12,919.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,498.46 : 63,754.98 = 12,919.24 : x
2. Step 2: Convert to fraction form
   42,498.46/63,754.98 = 12,919.24/x
3. Step 3: Cross multiply
   42,498.46x = 63,754.98 × 12,919.24
4. Step 4: Simplify right side
   42,498.46x = 823,665,887.82
5. Step 5: Solve for x
   x = 823,665,887.82/42,498.46
6. Step 6: Final answer
   x = 19,381.08