Finding the Fourth Proportional to 42,724.92, 64,092.50 and 17,781.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42,724.92 : 64,092.50 = 17,781.83 : x
2. Step 2: Convert to fraction form
   42,724.92/64,092.50 = 17,781.83/x
3. Step 3: Cross multiply
   42,724.92x = 64,092.50 × 17,781.83
4. Step 4: Simplify right side
   42,724.92x = 1,139,681,939.28
5. Step 5: Solve for x
   x = 1,139,681,939.28/42,724.92
6. Step 6: Final answer
   x = 26,674.88