Finding the Fourth Proportional to 61,057.72, 91,595.76 and 21,615.22

Step by Step Solution

1. Step 1: Write the proportion equation
   61,057.72 : 91,595.76 = 21,615.22 : x
2. Step 2: Convert to fraction form
   61,057.72/91,595.76 = 21,615.22/x
3. Step 3: Cross multiply
   61,057.72x = 91,595.76 × 21,615.22
4. Step 4: Simplify right side
   61,057.72x = 1,979,862,503.47
5. Step 5: Solve for x
   x = 1,979,862,503.47/61,057.72
6. Step 6: Final answer
   x = 32,426.08