Finding the Fourth Proportional to 72,451, 99,982.65 and 42,257.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72,451 : 99,982.65 = 42,257.17 : x
2. Step 2: Convert to fraction form
   72,451/99,982.65 = 42,257.17/x
3. Step 3: Cross multiply
   72,451x = 99,982.65 × 42,257.17
4. Step 4: Simplify right side
   72,451x = 4,224,983,838.10
5. Step 5: Solve for x
   x = 4,224,983,838.10/72,451
6. Step 6: Final answer
   x = 58,315.05