Finding the Fourth Proportional to 78,405.82, 116,778.85 and 78,023.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,405.82 : 116,778.85 = 78,023.52 : x
2. Step 2: Convert to fraction form
   78,405.82/116,778.85 = 78,023.52/x
3. Step 3: Cross multiply
   78,405.82x = 116,778.85 × 78,023.52
4. Step 4: Simplify right side
   78,405.82x = 9,111,496,743.49
5. Step 5: Solve for x
   x = 9,111,496,743.49/78,405.82
6. Step 6: Final answer
   x = 116,209.45