Finding the Fourth Proportional to 141,796.38, 195,683.12 and 78,138.28

Step by Step Solution

1. Step 1: Write the proportion equation
   141,796.38 : 195,683.12 = 78,138.28 : x
2. Step 2: Convert to fraction form
   141,796.38/195,683.12 = 78,138.28/x
3. Step 3: Cross multiply
   141,796.38x = 195,683.12 × 78,138.28
4. Step 4: Simplify right side
   141,796.38x = 15,290,342,421.83
5. Step 5: Solve for x
   x = 15,290,342,421.83/141,796.38
6. Step 6: Final answer
   x = 107,833.09