Finding the Fourth Proportional to 43,499.42, 65,253.81 and 13,906.70

Step by Step Solution

1. Step 1: Write the proportion equation
   43,499.42 : 65,253.81 = 13,906.70 : x
2. Step 2: Convert to fraction form
   43,499.42/65,253.81 = 13,906.70/x
3. Step 3: Cross multiply
   43,499.42x = 65,253.81 × 13,906.70
4. Step 4: Simplify right side
   43,499.42x = 907,465,159.53
5. Step 5: Solve for x
   x = 907,465,159.53/43,499.42
6. Step 6: Final answer
   x = 20,861.55