Finding the Fourth Proportional to 143,559.23, 198,109.76 and 79,897.05

Step by Step Solution

1. Step 1: Write the proportion equation
   143,559.23 : 198,109.76 = 79,897.05 : x
2. Step 2: Convert to fraction form
   143,559.23/198,109.76 = 79,897.05/x
3. Step 3: Cross multiply
   143,559.23x = 198,109.76 × 79,897.05
4. Step 4: Simplify right side
   143,559.23x = 15,828,385,000.72
5. Step 5: Solve for x
   x = 15,828,385,000.72/143,559.23
6. Step 6: Final answer
   x = 110,256.83