Finding the Fourth Proportional to 141,830.31, 195,725.41 and 78,168.09

Step by Step Solution

1. Step 1: Write the proportion equation
   141,830.31 : 195,725.41 = 78,168.09 : x
2. Step 2: Convert to fraction form
   141,830.31/195,725.41 = 78,168.09/x
3. Step 3: Cross multiply
   141,830.31x = 195,725.41 × 78,168.09
4. Step 4: Simplify right side
   141,830.31x = 15,299,481,464.17
5. Step 5: Solve for x
   x = 15,299,481,464.17/141,830.31
6. Step 6: Final answer
   x = 107,871.73