Finding the Fourth Proportional to 72,602.42, 108,907.72 and 25,855.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,602.42 : 108,907.72 = 25,855.30 : x
2. Step 2: Convert to fraction form
   72,602.42/108,907.72 = 25,855.30/x
3. Step 3: Cross multiply
   72,602.42x = 108,907.72 × 25,855.30
4. Step 4: Simplify right side
   72,602.42x = 2,815,841,772.92
5. Step 5: Solve for x
   x = 2,815,841,772.92/72,602.42
6. Step 6: Final answer
   x = 38,784.41