Finding the Fourth Proportional to 42,006.48, 63,014.58 and 13,929

Step by Step Solution

1. Step 1: Write the proportion equation
   42,006.48 : 63,014.58 = 13,929 : x
2. Step 2: Convert to fraction form
   42,006.48/63,014.58 = 13,929/x
3. Step 3: Cross multiply
   42,006.48x = 63,014.58 × 13,929
4. Step 4: Simplify right side
   42,006.48x = 877,730,084.82
5. Step 5: Solve for x
   x = 877,730,084.82/42,006.48
6. Step 6: Final answer
   x = 20,895.11