Finding the Fourth Proportional to 42,974.04, 64,484.55 and 16,679.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,974.04 : 64,484.55 = 16,679.82 : x
2. Step 2: Convert to fraction form
   42,974.04/64,484.55 = 16,679.82/x
3. Step 3: Cross multiply
   42,974.04x = 64,484.55 × 16,679.82
4. Step 4: Simplify right side
   42,974.04x = 1,075,590,686.78
5. Step 5: Solve for x
   x = 1,075,590,686.78/42,974.04
6. Step 6: Final answer
   x = 25,028.85