Finding the Fourth Proportional to 43,359.72, 64,971.54 and 25,819.98

Step by Step Solution

1. Step 1: Write the proportion equation
   43,359.72 : 64,971.54 = 25,819.98 : x
2. Step 2: Convert to fraction form
   43,359.72/64,971.54 = 25,819.98/x
3. Step 3: Cross multiply
   43,359.72x = 64,971.54 × 25,819.98
4. Step 4: Simplify right side
   43,359.72x = 1,677,563,863.37
5. Step 5: Solve for x
   x = 1,677,563,863.37/43,359.72
6. Step 6: Final answer
   x = 38,689.45