Finding the Fourth Proportional to 143,780.86, 215,660.84 and 49,003.18

Step by Step Solution

1. Step 1: Write the proportion equation
   143,780.86 : 215,660.84 = 49,003.18 : x
2. Step 2: Convert to fraction form
   143,780.86/215,660.84 = 49,003.18/x
3. Step 3: Cross multiply
   143,780.86x = 215,660.84 × 49,003.18
4. Step 4: Simplify right side
   143,780.86x = 10,568,066,961.47
5. Step 5: Solve for x
   x = 10,568,066,961.47/143,780.86
6. Step 6: Final answer
   x = 73,501.21