Finding the Fourth Proportional to 31,146.42, 42,980.43 and 16,999.02

Step by Step Solution

1. Step 1: Write the proportion equation
   31,146.42 : 42,980.43 = 16,999.02 : x
2. Step 2: Convert to fraction form
   31,146.42/42,980.43 = 16,999.02/x
3. Step 3: Cross multiply
   31,146.42x = 42,980.43 × 16,999.02
4. Step 4: Simplify right side
   31,146.42x = 730,625,189.18
5. Step 5: Solve for x
   x = 730,625,189.18/31,146.42
6. Step 6: Final answer
   x = 23,457.76