Finding the Fourth Proportional to 141,981.63, 195,919.50 and 78,319.42

Step by Step Solution

1. Step 1: Write the proportion equation
   141,981.63 : 195,919.50 = 78,319.42 : x
2. Step 2: Convert to fraction form
   141,981.63/195,919.50 = 78,319.42/x
3. Step 3: Cross multiply
   141,981.63x = 195,919.50 × 78,319.42
4. Step 4: Simplify right side
   141,981.63x = 15,344,301,410.59
5. Step 5: Solve for x
   x = 15,344,301,410.59/141,981.63
6. Step 6: Final answer
   x = 108,072.44