Finding the Fourth Proportional to 61,014.72, 91,524.64 and 21,572.16

Step by Step Solution

1. Step 1: Write the proportion equation
   61,014.72 : 91,524.64 = 21,572.16 : x
2. Step 2: Convert to fraction form
   61,014.72/91,524.64 = 21,572.16/x
3. Step 3: Cross multiply
   61,014.72x = 91,524.64 × 21,572.16
4. Step 4: Simplify right side
   61,014.72x = 1,974,384,178.02
5. Step 5: Solve for x
   x = 1,974,384,178.02/61,014.72
6. Step 6: Final answer
   x = 32,359.15