Finding the Fourth Proportional to 140,502, 210,753.12 and 57,396

Step by Step Solution

1. Step 1: Write the proportion equation
   140,502 : 210,753.12 = 57,396 : x
2. Step 2: Convert to fraction form
   140,502/210,753.12 = 57,396/x
3. Step 3: Cross multiply
   140,502x = 210,753.12 × 57,396
4. Step 4: Simplify right side
   140,502x = 12,096,386,075.52
5. Step 5: Solve for x
   x = 12,096,386,075.52/140,502
6. Step 6: Final answer
   x = 86,094.05