Finding the Fourth Proportional to 42,388.78, 63,583.20 and 14,686.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,388.78 : 63,583.20 = 14,686.78 : x
2. Step 2: Convert to fraction form
   42,388.78/63,583.20 = 14,686.78/x
3. Step 3: Cross multiply
   42,388.78x = 63,583.20 × 14,686.78
4. Step 4: Simplify right side
   42,388.78x = 933,832,470.10
5. Step 5: Solve for x
   x = 933,832,470.10/42,388.78
6. Step 6: Final answer
   x = 22,030.18