Finding the Fourth Proportional to 103,234.05, 142,312.20 and 72,965.97

Step by Step Solution

1. Step 1: Write the proportion equation
   103,234.05 : 142,312.20 = 72,965.97 : x
2. Step 2: Convert to fraction form
   103,234.05/142,312.20 = 72,965.97/x
3. Step 3: Cross multiply
   103,234.05x = 142,312.20 × 72,965.97
4. Step 4: Simplify right side
   103,234.05x = 10,383,947,715.83
5. Step 5: Solve for x
   x = 10,383,947,715.83/103,234.05
6. Step 6: Final answer
   x = 100,586.46