Finding the Fourth Proportional to 140,157.62, 210,264.17 and 51,411.89

Step by Step Solution

1. Step 1: Write the proportion equation
   140,157.62 : 210,264.17 = 51,411.89 : x
2. Step 2: Convert to fraction form
   140,157.62/210,264.17 = 51,411.89/x
3. Step 3: Cross multiply
   140,157.62x = 210,264.17 × 51,411.89
4. Step 4: Simplify right side
   140,157.62x = 10,810,078,647.58
5. Step 5: Solve for x
   x = 10,810,078,647.58/140,157.62
6. Step 6: Final answer
   x = 77,128.02