Finding the Fourth Proportional to 111,948.72, 167,747.10 and 78,181.44

Step by Step Solution

1. Step 1: Write the proportion equation
   111,948.72 : 167,747.10 = 78,181.44 : x
2. Step 2: Convert to fraction form
   111,948.72/167,747.10 = 78,181.44/x
3. Step 3: Cross multiply
   111,948.72x = 167,747.10 × 78,181.44
4. Step 4: Simplify right side
   111,948.72x = 13,114,709,833.82
5. Step 5: Solve for x
   x = 13,114,709,833.82/111,948.72
6. Step 6: Final answer
   x = 117,149.26