Finding the Fourth Proportional to 140,380.58, 210,547.78 and 50,404.66

Step by Step Solution

1. Step 1: Write the proportion equation
   140,380.58 : 210,547.78 = 50,404.66 : x
2. Step 2: Convert to fraction form
   140,380.58/210,547.78 = 50,404.66/x
3. Step 3: Cross multiply
   140,380.58x = 210,547.78 × 50,404.66
4. Step 4: Simplify right side
   140,380.58x = 10,612,589,264.65
5. Step 5: Solve for x
   x = 10,612,589,264.65/140,380.58
6. Step 6: Final answer
   x = 75,598.70