Finding the Fourth Proportional to 78,105.44, 117,133.94 and 28,179.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,105.44 : 117,133.94 = 28,179.04 : x
2. Step 2: Convert to fraction form
   78,105.44/117,133.94 = 28,179.04/x
3. Step 3: Cross multiply
   78,105.44x = 117,133.94 × 28,179.04
4. Step 4: Simplify right side
   78,105.44x = 3,300,721,980.62
5. Step 5: Solve for x
   x = 3,300,721,980.62/78,105.44
6. Step 6: Final answer
   x = 42,259.82