Finding the Fourth Proportional to 116,815.57, 161,205.38 and 63,100.57

Step by Step Solution

1. Step 1: Write the proportion equation
   116,815.57 : 161,205.38 = 63,100.57 : x
2. Step 2: Convert to fraction form
   116,815.57/161,205.38 = 63,100.57/x
3. Step 3: Cross multiply
   116,815.57x = 161,205.38 × 63,100.57
4. Step 4: Simplify right side
   116,815.57x = 10,172,151,119.80
5. Step 5: Solve for x
   x = 10,172,151,119.80/116,815.57
6. Step 6: Final answer
   x = 87,078.73