Finding the Fourth Proportional to 142,608.37, 196,801.88 and 78,076.52

Step by Step Solution

1. Step 1: Write the proportion equation
   142,608.37 : 196,801.88 = 78,076.52 : x
2. Step 2: Convert to fraction form
   142,608.37/196,801.88 = 78,076.52/x
3. Step 3: Cross multiply
   142,608.37x = 196,801.88 × 78,076.52
4. Step 4: Simplify right side
   142,608.37x = 15,365,605,919.86
5. Step 5: Solve for x
   x = 15,365,605,919.86/142,608.37
6. Step 6: Final answer
   x = 107,746.87