Finding the Fourth Proportional to 129,098.34, 178,153.43 and 78,797.34

Step by Step Solution

1. Step 1: Write the proportion equation
   129,098.34 : 178,153.43 = 78,797.34 : x
2. Step 2: Convert to fraction form
   129,098.34/178,153.43 = 78,797.34/x
3. Step 3: Cross multiply
   129,098.34x = 178,153.43 × 78,797.34
4. Step 4: Simplify right side
   129,098.34x = 14,038,016,001.89
5. Step 5: Solve for x
   x = 14,038,016,001.89/129,098.34
6. Step 6: Final answer
   x = 108,738.94