Finding the Fourth Proportional to 72,967.20, 109,478.14 and 25,585.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72,967.20 : 109,478.14 = 25,585.86 : x
2. Step 2: Convert to fraction form
   72,967.20/109,478.14 = 25,585.86/x
3. Step 3: Cross multiply
   72,967.20x = 109,478.14 × 25,585.86
4. Step 4: Simplify right side
   72,967.20x = 2,801,092,363.10
5. Step 5: Solve for x
   x = 2,801,092,363.10/72,967.20
6. Step 6: Final answer
   x = 38,388.38