Finding the Fourth Proportional to 143,351.71, 197,830.43 and 78,825.86

Step by Step Solution

1. Step 1: Write the proportion equation
   143,351.71 : 197,830.43 = 78,825.86 : x
2. Step 2: Convert to fraction form
   143,351.71/197,830.43 = 78,825.86/x
3. Step 3: Cross multiply
   143,351.71x = 197,830.43 × 78,825.86
4. Step 4: Simplify right side
   143,351.71x = 15,594,152,986.83
5. Step 5: Solve for x
   x = 15,594,152,986.83/143,351.71
6. Step 6: Final answer
   x = 108,782.47