Finding the Fourth Proportional to 143,002.61, 197,367.15 and 79,360.91

Step by Step Solution

1. Step 1: Write the proportion equation
   143,002.61 : 197,367.15 = 79,360.91 : x
2. Step 2: Convert to fraction form
   143,002.61/197,367.15 = 79,360.91/x
3. Step 3: Cross multiply
   143,002.61x = 197,367.15 × 79,360.91
4. Step 4: Simplify right side
   143,002.61x = 15,663,235,641.27
5. Step 5: Solve for x
   x = 15,663,235,641.27/143,002.61
6. Step 6: Final answer
   x = 109,531.12