Finding the Fourth Proportional to 143,345.31, 197,816.76 and 79,682.55

Step by Step Solution

1. Step 1: Write the proportion equation
   143,345.31 : 197,816.76 = 79,682.55 : x
2. Step 2: Convert to fraction form
   143,345.31/197,816.76 = 79,682.55/x
3. Step 3: Cross multiply
   143,345.31x = 197,816.76 × 79,682.55
4. Step 4: Simplify right side
   143,345.31x = 15,762,543,869.54
5. Step 5: Solve for x
   x = 15,762,543,869.54/143,345.31
6. Step 6: Final answer
   x = 109,962.05