Finding the Fourth Proportional to 102,060.56, 140,635.85 and 78,949.98

Step by Step Solution

1. Step 1: Write the proportion equation
   102,060.56 : 140,635.85 = 78,949.98 : x
2. Step 2: Convert to fraction form
   102,060.56/140,635.85 = 78,949.98/x
3. Step 3: Cross multiply
   102,060.56x = 140,635.85 × 78,949.98
4. Step 4: Simplify right side
   102,060.56x = 11,103,197,544.78
5. Step 5: Solve for x
   x = 11,103,197,544.78/102,060.56
6. Step 6: Final answer
   x = 108,790.29