Finding the Fourth Proportional to 142,608.10, 196,801.51 and 78,076.26

Step by Step Solution

1. Step 1: Write the proportion equation
   142,608.10 : 196,801.51 = 78,076.26 : x
2. Step 2: Convert to fraction form
   142,608.10/196,801.51 = 78,076.26/x
3. Step 3: Cross multiply
   142,608.10x = 196,801.51 × 78,076.26
4. Step 4: Simplify right side
   142,608.10x = 15,365,525,863.15
5. Step 5: Solve for x
   x = 15,365,525,863.15/142,608.10
6. Step 6: Final answer
   x = 107,746.52