Finding the Fourth Proportional to 143,123.86, 197,501.79 and 79,461.64

Step by Step Solution

1. Step 1: Write the proportion equation
   143,123.86 : 197,501.79 = 79,461.64 : x
2. Step 2: Convert to fraction form
   143,123.86/197,501.79 = 79,461.64/x
3. Step 3: Cross multiply
   143,123.86x = 197,501.79 × 79,461.64
4. Step 4: Simplify right side
   143,123.86x = 15,693,816,136.34
5. Step 5: Solve for x
   x = 15,693,816,136.34/143,123.86
6. Step 6: Final answer
   x = 109,651.99