Finding the Fourth Proportional to 111,542.15, 167,313.42 and 78,410.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111,542.15 : 167,313.42 = 78,410.42 : x
2. Step 2: Convert to fraction form
   111,542.15/167,313.42 = 78,410.42/x
3. Step 3: Cross multiply
   111,542.15x = 167,313.42 × 78,410.42
4. Step 4: Simplify right side
   111,542.15x = 13,119,114,697.27
5. Step 5: Solve for x
   x = 13,119,114,697.27/111,542.15
6. Step 6: Final answer
   x = 117,615.76