Finding the Fourth Proportional to 42,963, 64,463.60 and 16,669.77

Step by Step Solution

1. Step 1: Write the proportion equation
   42,963 : 64,463.60 = 16,669.77 : x
2. Step 2: Convert to fraction form
   42,963/64,463.60 = 16,669.77/x
3. Step 3: Cross multiply
   42,963x = 64,463.60 × 16,669.77
4. Step 4: Simplify right side
   42,963x = 1,074,593,385.37
5. Step 5: Solve for x
   x = 1,074,593,385.37/42,963
6. Step 6: Final answer
   x = 25,012.07