Finding the Fourth Proportional to 143,423.55, 198,005.58 and 109,162.98

Step by Step Solution

1. Step 1: Write the proportion equation
   143,423.55 : 198,005.58 = 109,162.98 : x
2. Step 2: Convert to fraction form
   143,423.55/198,005.58 = 109,162.98/x
3. Step 3: Cross multiply
   143,423.55x = 198,005.58 × 109,162.98
4. Step 4: Simplify right side
   143,423.55x = 21,614,878,623.61
5. Step 5: Solve for x
   x = 21,614,878,623.61/143,423.55
6. Step 6: Final answer
   x = 150,706.62