Finding the Fourth Proportional to 42,061.36, 63,103.38 and 13,985.95

Step by Step Solution

1. Step 1: Write the proportion equation
   42,061.36 : 63,103.38 = 13,985.95 : x
2. Step 2: Convert to fraction form
   42,061.36/63,103.38 = 13,985.95/x
3. Step 3: Cross multiply
   42,061.36x = 63,103.38 × 13,985.95
4. Step 4: Simplify right side
   42,061.36x = 882,560,717.51
5. Step 5: Solve for x
   x = 882,560,717.51/42,061.36
6. Step 6: Final answer
   x = 20,982.70