Finding the Fourth Proportional to 129,124, 178,200.84 and 78,832.72

Step by Step Solution

1. Step 1: Write the proportion equation
   129,124 : 178,200.84 = 78,832.72 : x
2. Step 2: Convert to fraction form
   129,124/178,200.84 = 78,832.72/x
3. Step 3: Cross multiply
   129,124x = 178,200.84 × 78,832.72
4. Step 4: Simplify right side
   129,124x = 14,048,056,923.48
5. Step 5: Solve for x
   x = 14,048,056,923.48/129,124
6. Step 6: Final answer
   x = 108,795.09