Finding the Fourth Proportional to 140,613, 210,948.69 and 57,507

Step by Step Solution

1. Step 1: Write the proportion equation
   140,613 : 210,948.69 = 57,507 : x
2. Step 2: Convert to fraction form
   140,613/210,948.69 = 57,507/x
3. Step 3: Cross multiply
   140,613x = 210,948.69 × 57,507
4. Step 4: Simplify right side
   140,613x = 12,131,026,315.83
5. Step 5: Solve for x
   x = 12,131,026,315.83/140,613
6. Step 6: Final answer
   x = 86,272.44