Finding the Fourth Proportional to 143,002.53, 197,340.71 and 79,339.77

Step by Step Solution

1. Step 1: Write the proportion equation
   143,002.53 : 197,340.71 = 79,339.77 : x
2. Step 2: Convert to fraction form
   143,002.53/197,340.71 = 79,339.77/x
3. Step 3: Cross multiply
   143,002.53x = 197,340.71 × 79,339.77
4. Step 4: Simplify right side
   143,002.53x = 15,656,966,146.34
5. Step 5: Solve for x
   x = 15,656,966,146.34/143,002.53
6. Step 6: Final answer
   x = 109,487.34