Finding the Fourth Proportional to 61,222.83, 91,799.76 and 21,223.05

Step by Step Solution

1. Step 1: Write the proportion equation
   61,222.83 : 91,799.76 = 21,223.05 : x
2. Step 2: Convert to fraction form
   61,222.83/91,799.76 = 21,223.05/x
3. Step 3: Cross multiply
   61,222.83x = 91,799.76 × 21,223.05
4. Step 4: Simplify right side
   61,222.83x = 1,948,270,896.47
5. Step 5: Solve for x
   x = 1,948,270,896.47/61,222.83
6. Step 6: Final answer
   x = 31,822.62