Finding the Fourth Proportional to 61,259.60, 91,892.85 and 21,816.72

Step by Step Solution

1. Step 1: Write the proportion equation
   61,259.60 : 91,892.85 = 21,816.72 : x
2. Step 2: Convert to fraction form
   61,259.60/91,892.85 = 21,816.72/x
3. Step 3: Cross multiply
   61,259.60x = 91,892.85 × 21,816.72
4. Step 4: Simplify right side
   61,259.60x = 2,004,800,118.99
5. Step 5: Solve for x
   x = 2,004,800,118.99/61,259.60
6. Step 6: Final answer
   x = 32,726.30