Finding the Fourth Proportional to 42,846.94, 64,273.13 and 13,262.29

Step by Step Solution

1. Step 1: Write the proportion equation
   42,846.94 : 64,273.13 = 13,262.29 : x
2. Step 2: Convert to fraction form
   42,846.94/64,273.13 = 13,262.29/x
3. Step 3: Cross multiply
   42,846.94x = 64,273.13 × 13,262.29
4. Step 4: Simplify right side
   42,846.94x = 852,408,889.27
5. Step 5: Solve for x
   x = 852,408,889.27/42,846.94
6. Step 6: Final answer
   x = 19,894.28