Finding the Fourth Proportional to 42,868.56, 64,275.44 and 17,925.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,868.56 : 64,275.44 = 17,925.80 : x
2. Step 2: Convert to fraction form
   42,868.56/64,275.44 = 17,925.80/x
3. Step 3: Cross multiply
   42,868.56x = 64,275.44 × 17,925.80
4. Step 4: Simplify right side
   42,868.56x = 1,152,188,682.35
5. Step 5: Solve for x
   x = 1,152,188,682.35/42,868.56
6. Step 6: Final answer
   x = 26,877.24