Finding the Fourth Proportional to 112,123.72, 154,768.23 and 66,815.92

Step by Step Solution

1. Step 1: Write the proportion equation
   112,123.72 : 154,768.23 = 66,815.92 : x
2. Step 2: Convert to fraction form
   112,123.72/154,768.23 = 66,815.92/x
3. Step 3: Cross multiply
   112,123.72x = 154,768.23 × 66,815.92
4. Step 4: Simplify right side
   112,123.72x = 10,340,981,674.22
5. Step 5: Solve for x
   x = 10,340,981,674.22/112,123.72
6. Step 6: Final answer
   x = 92,228.31