Finding the Fourth Proportional to 129,314.34, 178,452.08 and 72,725.72

Step by Step Solution

1. Step 1: Write the proportion equation
   129,314.34 : 178,452.08 = 72,725.72 : x
2. Step 2: Convert to fraction form
   129,314.34/178,452.08 = 72,725.72/x
3. Step 3: Cross multiply
   129,314.34x = 178,452.08 × 72,725.72
4. Step 4: Simplify right side
   129,314.34x = 12,978,056,003.50
5. Step 5: Solve for x
   x = 12,978,056,003.50/129,314.34
6. Step 6: Final answer
   x = 100,360.53