Finding the Fourth Proportional to 42,947.89, 64,427.91 and 16,655.29

Step by Step Solution

1. Step 1: Write the proportion equation
   42,947.89 : 64,427.91 = 16,655.29 : x
2. Step 2: Convert to fraction form
   42,947.89/64,427.91 = 16,655.29/x
3. Step 3: Cross multiply
   42,947.89x = 64,427.91 × 16,655.29
4. Step 4: Simplify right side
   42,947.89x = 1,073,065,119.73
5. Step 5: Solve for x
   x = 1,073,065,119.73/42,947.89
6. Step 6: Final answer
   x = 24,985.28