Finding the Fourth Proportional to 116,815.75, 161,205.64 and 63,100.76

Step by Step Solution

1. Step 1: Write the proportion equation
   116,815.75 : 161,205.64 = 63,100.76 : x
2. Step 2: Convert to fraction form
   116,815.75/161,205.64 = 63,100.76/x
3. Step 3: Cross multiply
   116,815.75x = 161,205.64 × 63,100.76
4. Step 4: Simplify right side
   116,815.75x = 10,172,197,791.45
5. Step 5: Solve for x
   x = 10,172,197,791.45/116,815.75
6. Step 6: Final answer
   x = 87,078.99