Finding the Fourth Proportional to 42,725.61, 64,093.55 and 17,782.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42,725.61 : 64,093.55 = 17,782.47 : x
2. Step 2: Convert to fraction form
   42,725.61/64,093.55 = 17,782.47/x
3. Step 3: Cross multiply
   42,725.61x = 64,093.55 × 17,782.47
4. Step 4: Simplify right side
   42,725.61x = 1,139,741,541.16
5. Step 5: Solve for x
   x = 1,139,741,541.16/42,725.61
6. Step 6: Final answer
   x = 26,675.84