Finding the Fourth Proportional to 31,053.61, 42,854.16 and 16,906.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,053.61 : 42,854.16 = 16,906.42 : x
2. Step 2: Convert to fraction form
   31,053.61/42,854.16 = 16,906.42/x
3. Step 3: Cross multiply
   31,053.61x = 42,854.16 × 16,906.42
4. Step 4: Simplify right side
   31,053.61x = 724,510,427.71
5. Step 5: Solve for x
   x = 724,510,427.71/31,053.61
6. Step 6: Final answer
   x = 23,330.96