Finding the Fourth Proportional to 129,837.34, 194,755.83 and 72,171.25

Step by Step Solution

1. Step 1: Write the proportion equation
   129,837.34 : 194,755.83 = 72,171.25 : x
2. Step 2: Convert to fraction form
   129,837.34/194,755.83 = 72,171.25/x
3. Step 3: Cross multiply
   129,837.34x = 194,755.83 × 72,171.25
4. Step 4: Simplify right side
   129,837.34x = 14,055,771,695.89
5. Step 5: Solve for x
   x = 14,055,771,695.89/129,837.34
6. Step 6: Final answer
   x = 108,256.77