Finding the Fourth Proportional to 61,061.82, 91,566.09 and 21,605.82

Step by Step Solution

1. Step 1: Write the proportion equation
   61,061.82 : 91,566.09 = 21,605.82 : x
2. Step 2: Convert to fraction form
   61,061.82/91,566.09 = 21,605.82/x
3. Step 3: Cross multiply
   61,061.82x = 91,566.09 × 21,605.82
4. Step 4: Simplify right side
   61,061.82x = 1,978,360,458.64
5. Step 5: Solve for x
   x = 1,978,360,458.64/61,061.82
6. Step 6: Final answer
   x = 32,399.30