Finding the Fourth Proportional to 42,663.57, 63,968.01 and 17,720.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42,663.57 : 63,968.01 = 17,720.83 : x
2. Step 2: Convert to fraction form
   42,663.57/63,968.01 = 17,720.83/x
3. Step 3: Cross multiply
   42,663.57x = 63,968.01 × 17,720.83
4. Step 4: Simplify right side
   42,663.57x = 1,133,566,230.65
5. Step 5: Solve for x
   x = 1,133,566,230.65/42,663.57
6. Step 6: Final answer
   x = 26,569.89