Finding the Fourth Proportional to 141,968.32, 195,916.72 and 78,307.12

Step by Step Solution

1. Step 1: Write the proportion equation
   141,968.32 : 195,916.72 = 78,307.12 : x
2. Step 2: Convert to fraction form
   141,968.32/195,916.72 = 78,307.12/x
3. Step 3: Cross multiply
   141,968.32x = 195,916.72 × 78,307.12
4. Step 4: Simplify right side
   141,968.32x = 15,341,674,103.05
5. Step 5: Solve for x
   x = 15,341,674,103.05/141,968.32
6. Step 6: Final answer
   x = 108,064.07