Finding the Fourth Proportional to 140,340.30, 210,593.43 and 51,656.10

Step by Step Solution

1. Step 1: Write the proportion equation
   140,340.30 : 210,593.43 = 51,656.10 : x
2. Step 2: Convert to fraction form
   140,340.30/210,593.43 = 51,656.10/x
3. Step 3: Cross multiply
   140,340.30x = 210,593.43 × 51,656.10
4. Step 4: Simplify right side
   140,340.30x = 10,878,435,279.42
5. Step 5: Solve for x
   x = 10,878,435,279.42/140,340.30
6. Step 6: Final answer
   x = 77,514.69