Finding the Fourth Proportional to 28,359.82, 42,465.41 and 19,994.54

Step by Step Solution

1. Step 1: Write the proportion equation
   28,359.82 : 42,465.41 = 19,994.54 : x
2. Step 2: Convert to fraction form
   28,359.82/42,465.41 = 19,994.54/x
3. Step 3: Cross multiply
   28,359.82x = 42,465.41 × 19,994.54
4. Step 4: Simplify right side
   28,359.82x = 849,076,345.05
5. Step 5: Solve for x
   x = 849,076,345.05/28,359.82
6. Step 6: Final answer
   x = 29,939.41