Finding the Fourth Proportional to 61,308.24, 91,969.56 and 21,870.96

Step by Step Solution

1. Step 1: Write the proportion equation
   61,308.24 : 91,969.56 = 21,870.96 : x
2. Step 2: Convert to fraction form
   61,308.24/91,969.56 = 21,870.96/x
3. Step 3: Cross multiply
   61,308.24x = 91,969.56 × 21,870.96
4. Step 4: Simplify right side
   61,308.24x = 2,011,462,567.98
5. Step 5: Solve for x
   x = 2,011,462,567.98/61,308.24
6. Step 6: Final answer
   x = 32,809.01