Finding the Fourth Proportional to 140,664.76, 210,997.18 and 42,168.76

Step by Step Solution

1. Step 1: Write the proportion equation
   140,664.76 : 210,997.18 = 42,168.76 : x
2. Step 2: Convert to fraction form
   140,664.76/210,997.18 = 42,168.76/x
3. Step 3: Cross multiply
   140,664.76x = 210,997.18 × 42,168.76
4. Step 4: Simplify right side
   140,664.76x = 8,897,489,444.10
5. Step 5: Solve for x
   x = 8,897,489,444.10/140,664.76
6. Step 6: Final answer
   x = 63,253.15