Finding the Fourth Proportional to 108,694.56, 163,072.32 and 61,980.48

Step by Step Solution

1. Step 1: Write the proportion equation
   108,694.56 : 163,072.32 = 61,980.48 : x
2. Step 2: Convert to fraction form
   108,694.56/163,072.32 = 61,980.48/x
3. Step 3: Cross multiply
   108,694.56x = 163,072.32 × 61,980.48
4. Step 4: Simplify right side
   108,694.56x = 10,107,300,668.31
5. Step 5: Solve for x
   x = 10,107,300,668.31/108,694.56
6. Step 6: Final answer
   x = 92,988.10