Finding the Fourth Proportional to 42,385.10, 63,586.41 and 13,924.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,385.10 : 63,586.41 = 13,924.20 : x
2. Step 2: Convert to fraction form
   42,385.10/63,586.41 = 13,924.20/x
3. Step 3: Cross multiply
   42,385.10x = 63,586.41 × 13,924.20
4. Step 4: Simplify right side
   42,385.10x = 885,390,076.36
5. Step 5: Solve for x
   x = 885,390,076.36/42,385.10
6. Step 6: Final answer
   x = 20,889.18