Finding the Fourth Proportional to 31,051.52, 42,851.87 and 16,905.14

Step by Step Solution

1. Step 1: Write the proportion equation
   31,051.52 : 42,851.87 = 16,905.14 : x
2. Step 2: Convert to fraction form
   31,051.52/42,851.87 = 16,905.14/x
3. Step 3: Cross multiply
   31,051.52x = 42,851.87 × 16,905.14
4. Step 4: Simplify right side
   31,051.52x = 724,416,562.83
5. Step 5: Solve for x
   x = 724,416,562.83/31,051.52
6. Step 6: Final answer
   x = 23,329.51