Finding the Fourth Proportional to 42,434.16, 63,648 and 14,356.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,434.16 : 63,648 = 14,356.56 : x
2. Step 2: Convert to fraction form
   42,434.16/63,648 = 14,356.56/x
3. Step 3: Cross multiply
   42,434.16x = 63,648 × 14,356.56
4. Step 4: Simplify right side
   42,434.16x = 913,766,330.88
5. Step 5: Solve for x
   x = 913,766,330.88/42,434.16
6. Step 6: Final answer
   x = 21,533.74