Finding the Fourth Proportional to 42,780.83, 64,183.05 and 17,832.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,780.83 : 64,183.05 = 17,832.60 : x
2. Step 2: Convert to fraction form
   42,780.83/64,183.05 = 17,832.60/x
3. Step 3: Cross multiply
   42,780.83x = 64,183.05 × 17,832.60
4. Step 4: Simplify right side
   42,780.83x = 1,144,550,657.43
5. Step 5: Solve for x
   x = 1,144,550,657.43/42,780.83
6. Step 6: Final answer
   x = 26,753.82