Finding the Fourth Proportional to 42,783.65, 64,191.91 and 17,817.02

Step by Step Solution

1. Step 1: Write the proportion equation
   42,783.65 : 64,191.91 = 17,817.02 : x
2. Step 2: Convert to fraction form
   42,783.65/64,191.91 = 17,817.02/x
3. Step 3: Cross multiply
   42,783.65x = 64,191.91 × 17,817.02
4. Step 4: Simplify right side
   42,783.65x = 1,143,708,544.31
5. Step 5: Solve for x
   x = 1,143,708,544.31/42,783.65
6. Step 6: Final answer
   x = 26,732.37