Finding the Fourth Proportional to 31,056.08, 42,857.48 and 16,909.02

Step by Step Solution

1. Step 1: Write the proportion equation
   31,056.08 : 42,857.48 = 16,909.02 : x
2. Step 2: Convert to fraction form
   31,056.08/42,857.48 = 16,909.02/x
3. Step 3: Cross multiply
   31,056.08x = 42,857.48 × 16,909.02
4. Step 4: Simplify right side
   31,056.08x = 724,677,986.47
5. Step 5: Solve for x
   x = 724,677,986.47/31,056.08
6. Step 6: Final answer
   x = 23,334.50