Finding the Fourth Proportional to 42,004.49, 63,078.65 and 28,054.17

Step by Step Solution

1. Step 1: Write the proportion equation
   42,004.49 : 63,078.65 = 28,054.17 : x
2. Step 2: Convert to fraction form
   42,004.49/63,078.65 = 28,054.17/x
3. Step 3: Cross multiply
   42,004.49x = 63,078.65 × 28,054.17
4. Step 4: Simplify right side
   42,004.49x = 1,769,618,714.81
5. Step 5: Solve for x
   x = 1,769,618,714.81/42,004.49
6. Step 6: Final answer
   x = 42,129.28