Finding the Fourth Proportional to 140,554.88, 210,915.48 and 51,870.14

Step by Step Solution

1. Step 1: Write the proportion equation
   140,554.88 : 210,915.48 = 51,870.14 : x
2. Step 2: Convert to fraction form
   140,554.88/210,915.48 = 51,870.14/x
3. Step 3: Cross multiply
   140,554.88x = 210,915.48 × 51,870.14
4. Step 4: Simplify right side
   140,554.88x = 10,940,215,475.77
5. Step 5: Solve for x
   x = 10,940,215,475.77/140,554.88
6. Step 6: Final answer
   x = 77,835.90