Finding the Fourth Proportional to 140,632.48, 210,921.84 and 42,136.48

Step by Step Solution

1. Step 1: Write the proportion equation
   140,632.48 : 210,921.84 = 42,136.48 : x
2. Step 2: Convert to fraction form
   140,632.48/210,921.84 = 42,136.48/x
3. Step 3: Cross multiply
   140,632.48x = 210,921.84 × 42,136.48
4. Step 4: Simplify right side
   140,632.48x = 8,887,503,892.72
5. Step 5: Solve for x
   x = 8,887,503,892.72/140,632.48
6. Step 6: Final answer
   x = 63,196.67