Finding the Fourth Proportional to 72,806.42, 109,235.92 and 25,428.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,806.42 : 109,235.92 = 25,428.50 : x
2. Step 2: Convert to fraction form
   72,806.42/109,235.92 = 25,428.50/x
3. Step 3: Cross multiply
   72,806.42x = 109,235.92 × 25,428.50
4. Step 4: Simplify right side
   72,806.42x = 2,777,705,591.72
5. Step 5: Solve for x
   x = 2,777,705,591.72/72,806.42
6. Step 6: Final answer
   x = 38,151.93