Finding the Fourth Proportional to 43,131.58, 64,658.89 and 16,830.20

Step by Step Solution

1. Step 1: Write the proportion equation
   43,131.58 : 64,658.89 = 16,830.20 : x
2. Step 2: Convert to fraction form
   43,131.58/64,658.89 = 16,830.20/x
3. Step 3: Cross multiply
   43,131.58x = 64,658.89 × 16,830.20
4. Step 4: Simplify right side
   43,131.58x = 1,088,222,050.48
5. Step 5: Solve for x
   x = 1,088,222,050.48/43,131.58
6. Step 6: Final answer
   x = 25,230.28