Finding the Fourth Proportional to 42,772.32, 64,142.08 and 14,687.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,772.32 : 64,142.08 = 14,687.16 : x
2. Step 2: Convert to fraction form
   42,772.32/64,142.08 = 14,687.16/x
3. Step 3: Cross multiply
   42,772.32x = 64,142.08 × 14,687.16
4. Step 4: Simplify right side
   42,772.32x = 942,064,991.69
5. Step 5: Solve for x
   x = 942,064,991.69/42,772.32
6. Step 6: Final answer
   x = 22,025.11