Finding the Fourth Proportional to 143,398.72, 215,097.60 and 36,782.56

Step by Step Solution

1. Step 1: Write the proportion equation
   143,398.72 : 215,097.60 = 36,782.56 : x
2. Step 2: Convert to fraction form
   143,398.72/215,097.60 = 36,782.56/x
3. Step 3: Cross multiply
   143,398.72x = 215,097.60 × 36,782.56
4. Step 4: Simplify right side
   143,398.72x = 7,911,840,377.86
5. Step 5: Solve for x
   x = 7,911,840,377.86/143,398.72
6. Step 6: Final answer
   x = 55,173.72