Finding the Fourth Proportional to 72,168.84, 108,250.83 and 25,420.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,168.84 : 108,250.83 = 25,420.50 : x
2. Step 2: Convert to fraction form
   72,168.84/108,250.83 = 25,420.50/x
3. Step 3: Cross multiply
   72,168.84x = 108,250.83 × 25,420.50
4. Step 4: Simplify right side
   72,168.84x = 2,751,790,224.02
5. Step 5: Solve for x
   x = 2,751,790,224.02/72,168.84
6. Step 6: Final answer
   x = 38,129.89