Finding the Fourth Proportional to 42,279.24, 58,345.78 and 25,509

Step by Step Solution

1. Step 1: Write the proportion equation
   42,279.24 : 58,345.78 = 25,509 : x
2. Step 2: Convert to fraction form
   42,279.24/58,345.78 = 25,509/x
3. Step 3: Cross multiply
   42,279.24x = 58,345.78 × 25,509
4. Step 4: Simplify right side
   42,279.24x = 1,488,342,502.02
5. Step 5: Solve for x
   x = 1,488,342,502.02/42,279.24
6. Step 6: Final answer
   x = 35,202.68