Finding the Fourth Proportional to 31,435.86, 43,380.63 and 17,288.70

Step by Step Solution

1. Step 1: Write the proportion equation
   31,435.86 : 43,380.63 = 17,288.70 : x
2. Step 2: Convert to fraction form
   31,435.86/43,380.63 = 17,288.70/x
3. Step 3: Cross multiply
   31,435.86x = 43,380.63 × 17,288.70
4. Step 4: Simplify right side
   31,435.86x = 749,994,697.88
5. Step 5: Solve for x
   x = 749,994,697.88/31,435.86
6. Step 6: Final answer
   x = 23,857.93