Finding the Fourth Proportional to 141,719.25, 195,568.50 and 77,187

Step by Step Solution

1. Step 1: Write the proportion equation
   141,719.25 : 195,568.50 = 77,187 : x
2. Step 2: Convert to fraction form
   141,719.25/195,568.50 = 77,187/x
3. Step 3: Cross multiply
   141,719.25x = 195,568.50 × 77,187
4. Step 4: Simplify right side
   141,719.25x = 15,095,345,809.50
5. Step 5: Solve for x
   x = 15,095,345,809.50/141,719.25
6. Step 6: Final answer
   x = 106,515.85