Finding the Fourth Proportional to 162,456.80, 243,581.49 and 78,049.04

Step by Step Solution

1. Step 1: Write the proportion equation
   162,456.80 : 243,581.49 = 78,049.04 : x
2. Step 2: Convert to fraction form
   162,456.80/243,581.49 = 78,049.04/x
3. Step 3: Cross multiply
   162,456.80x = 243,581.49 × 78,049.04
4. Step 4: Simplify right side
   162,456.80x = 19,011,300,238.36
5. Step 5: Solve for x
   x = 19,011,300,238.36/162,456.80
6. Step 6: Final answer
   x = 117,023.73