Finding the Fourth Proportional to 30,688.63, 42,345.93 and 17,259.37

Step by Step Solution

1. Step 1: Write the proportion equation
   30,688.63 : 42,345.93 = 17,259.37 : x
2. Step 2: Convert to fraction form
   30,688.63/42,345.93 = 17,259.37/x
3. Step 3: Cross multiply
   30,688.63x = 42,345.93 × 17,259.37
4. Step 4: Simplify right side
   30,688.63x = 730,864,073.86
5. Step 5: Solve for x
   x = 730,864,073.86/30,688.63
6. Step 6: Final answer
   x = 23,815.47