Finding the Fourth Proportional to 53,810.72, 80,715.94 and 25,645.40

Step by Step Solution

1. Step 1: Write the proportion equation
   53,810.72 : 80,715.94 = 25,645.40 : x
2. Step 2: Convert to fraction form
   53,810.72/80,715.94 = 25,645.40/x
3. Step 3: Cross multiply
   53,810.72x = 80,715.94 × 25,645.40
4. Step 4: Simplify right side
   53,810.72x = 2,069,992,099.98
5. Step 5: Solve for x
   x = 2,069,992,099.98/53,810.72
6. Step 6: Final answer
   x = 38,468.03