Finding the Fourth Proportional to 45,008.54, 67,511.94 and 13,439.99

Step by Step Solution

1. Step 1: Write the proportion equation
   45,008.54 : 67,511.94 = 13,439.99 : x
2. Step 2: Convert to fraction form
   45,008.54/67,511.94 = 13,439.99/x
3. Step 3: Cross multiply
   45,008.54x = 67,511.94 × 13,439.99
4. Step 4: Simplify right side
   45,008.54x = 907,359,764.78
5. Step 5: Solve for x
   x = 907,359,764.78/45,008.54
6. Step 6: Final answer
   x = 20,159.73