Finding the Fourth Proportional to 61,256.38, 91,888.01 and 21,813.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,256.38 : 91,888.01 = 21,813.50 : x
2. Step 2: Convert to fraction form
   61,256.38/91,888.01 = 21,813.50/x
3. Step 3: Cross multiply
   61,256.38x = 91,888.01 × 21,813.50
4. Step 4: Simplify right side
   61,256.38x = 2,004,398,701.23
5. Step 5: Solve for x
   x = 2,004,398,701.23/61,256.38
6. Step 6: Final answer
   x = 32,721.47