Finding the Fourth Proportional to 42,619.34, 63,936.16 and 13,030.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,619.34 : 63,936.16 = 13,030.24 : x
2. Step 2: Convert to fraction form
   42,619.34/63,936.16 = 13,030.24/x
3. Step 3: Cross multiply
   42,619.34x = 63,936.16 × 13,030.24
4. Step 4: Simplify right side
   42,619.34x = 833,103,653.41
5. Step 5: Solve for x
   x = 833,103,653.41/42,619.34
6. Step 6: Final answer
   x = 19,547.55