Finding the Fourth Proportional to 140,492.24, 210,738.52 and 57,386.24

Step by Step Solution

1. Step 1: Write the proportion equation
   140,492.24 : 210,738.52 = 57,386.24 : x
2. Step 2: Convert to fraction form
   140,492.24/210,738.52 = 57,386.24/x
3. Step 3: Cross multiply
   140,492.24x = 210,738.52 × 57,386.24
4. Step 4: Simplify right side
   140,492.24x = 12,093,491,285.96
5. Step 5: Solve for x
   x = 12,093,491,285.96/140,492.24
6. Step 6: Final answer
   x = 86,079.43