Finding the Fourth Proportional to 72,798.02, 109,223.30 and 25,420.09

Step by Step Solution

1. Step 1: Write the proportion equation
   72,798.02 : 109,223.30 = 25,420.09 : x
2. Step 2: Convert to fraction form
   72,798.02/109,223.30 = 25,420.09/x
3. Step 3: Cross multiply
   72,798.02x = 109,223.30 × 25,420.09
4. Step 4: Simplify right side
   72,798.02x = 2,776,466,116.10
5. Step 5: Solve for x
   x = 2,776,466,116.10/72,798.02
6. Step 6: Final answer
   x = 38,139.31