Finding the Fourth Proportional to 112,456.72, 168,601.75 and 68,072.98

Step by Step Solution

1. Step 1: Write the proportion equation
   112,456.72 : 168,601.75 = 68,072.98 : x
2. Step 2: Convert to fraction form
   112,456.72/168,601.75 = 68,072.98/x
3. Step 3: Cross multiply
   112,456.72x = 168,601.75 × 68,072.98
4. Step 4: Simplify right side
   112,456.72x = 11,477,223,555.72
5. Step 5: Solve for x
   x = 11,477,223,555.72/112,456.72
6. Step 6: Final answer
   x = 102,059.03