Finding the Fourth Proportional to 141,815.95, 195,715.25 and 81,406.15

Step by Step Solution

1. Step 1: Write the proportion equation
   141,815.95 : 195,715.25 = 81,406.15 : x
2. Step 2: Convert to fraction form
   141,815.95/195,715.25 = 81,406.15/x
3. Step 3: Cross multiply
   141,815.95x = 195,715.25 × 81,406.15
4. Step 4: Simplify right side
   141,815.95x = 15,932,424,998.79
5. Step 5: Solve for x
   x = 15,932,424,998.79/141,815.95
6. Step 6: Final answer
   x = 112,345.79