Finding the Fourth Proportional to 42,691.47, 64,040.29 and 16,396.22

Step by Step Solution

1. Step 1: Write the proportion equation
   42,691.47 : 64,040.29 = 16,396.22 : x
2. Step 2: Convert to fraction form
   42,691.47/64,040.29 = 16,396.22/x
3. Step 3: Cross multiply
   42,691.47x = 64,040.29 × 16,396.22
4. Step 4: Simplify right side
   42,691.47x = 1,050,018,442.59
5. Step 5: Solve for x
   x = 1,050,018,442.59/42,691.47
6. Step 6: Final answer
   x = 24,595.51