Finding the Fourth Proportional to 142,638.52, 196,844.24 and 78,110.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,638.52 : 196,844.24 = 78,110.48 : x
2. Step 2: Convert to fraction form
   142,638.52/196,844.24 = 78,110.48/x
3. Step 3: Cross multiply
   142,638.52x = 196,844.24 × 78,110.48
4. Step 4: Simplify right side
   142,638.52x = 15,375,598,071.64
5. Step 5: Solve for x
   x = 15,375,598,071.64/142,638.52
6. Step 6: Final answer
   x = 107,794.15