Finding the Fourth Proportional to 31,036.59, 42,830.64 and 16,889.58

Step by Step Solution

1. Step 1: Write the proportion equation
   31,036.59 : 42,830.64 = 16,889.58 : x
2. Step 2: Convert to fraction form
   31,036.59/42,830.64 = 16,889.58/x
3. Step 3: Cross multiply
   31,036.59x = 42,830.64 × 16,889.58
4. Step 4: Simplify right side
   31,036.59x = 723,391,520.73
5. Step 5: Solve for x
   x = 723,391,520.73/31,036.59
6. Step 6: Final answer
   x = 23,307.70