Finding the Fourth Proportional to 140,662.76, 210,994.18 and 42,166.76

Step by Step Solution

1. Step 1: Write the proportion equation
   140,662.76 : 210,994.18 = 42,166.76 : x
2. Step 2: Convert to fraction form
   140,662.76/210,994.18 = 42,166.76/x
3. Step 3: Cross multiply
   140,662.76x = 210,994.18 × 42,166.76
4. Step 4: Simplify right side
   140,662.76x = 8,896,940,949.46
5. Step 5: Solve for x
   x = 8,896,940,949.46/140,662.76
6. Step 6: Final answer
   x = 63,250.15