Finding the Fourth Proportional to 42,739.83, 64,117.85 and 17,766.32

Step by Step Solution

1. Step 1: Write the proportion equation
   42,739.83 : 64,117.85 = 17,766.32 : x
2. Step 2: Convert to fraction form
   42,739.83/64,117.85 = 17,766.32/x
3. Step 3: Cross multiply
   42,739.83x = 64,117.85 × 17,766.32
4. Step 4: Simplify right side
   42,739.83x = 1,139,137,831.39
5. Step 5: Solve for x
   x = 1,139,137,831.39/42,739.83
6. Step 6: Final answer
   x = 26,652.84