Finding the Fourth Proportional to 45,245.37, 67,876.89 and 13,657.99

Step by Step Solution

1. Step 1: Write the proportion equation
   45,245.37 : 67,876.89 = 13,657.99 : x
2. Step 2: Convert to fraction form
   45,245.37/67,876.89 = 13,657.99/x
3. Step 3: Cross multiply
   45,245.37x = 67,876.89 × 13,657.99
4. Step 4: Simplify right side
   45,245.37x = 927,061,884.85
5. Step 5: Solve for x
   x = 927,061,884.85/45,245.37
6. Step 6: Final answer
   x = 20,489.65