Finding the Fourth Proportional to 42,086.48, 63,116.76 and 14,378

Step by Step Solution

1. Step 1: Write the proportion equation
   42,086.48 : 63,116.76 = 14,378 : x
2. Step 2: Convert to fraction form
   42,086.48/63,116.76 = 14,378/x
3. Step 3: Cross multiply
   42,086.48x = 63,116.76 × 14,378
4. Step 4: Simplify right side
   42,086.48x = 907,492,775.28
5. Step 5: Solve for x
   x = 907,492,775.28/42,086.48
6. Step 6: Final answer
   x = 21,562.57