Finding the Fourth Proportional to 42,807.80, 64,199.45 and 16,506.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,807.80 : 64,199.45 = 16,506.50 : x
2. Step 2: Convert to fraction form
   42,807.80/64,199.45 = 16,506.50/x
3. Step 3: Cross multiply
   42,807.80x = 64,199.45 × 16,506.50
4. Step 4: Simplify right side
   42,807.80x = 1,059,707,941.69
5. Step 5: Solve for x
   x = 1,059,707,941.69/42,807.80
6. Step 6: Final answer
   x = 24,755.02