Finding the Fourth Proportional to 42,761.80, 64,097.34 and 16,455.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,761.80 : 64,097.34 = 16,455.16 : x
2. Step 2: Convert to fraction form
   42,761.80/64,097.34 = 16,455.16/x
3. Step 3: Cross multiply
   42,761.80x = 64,097.34 × 16,455.16
4. Step 4: Simplify right side
   42,761.80x = 1,054,731,985.27
5. Step 5: Solve for x
   x = 1,054,731,985.27/42,761.80
6. Step 6: Final answer
   x = 24,665.29