Finding the Fourth Proportional to 61,222.88, 91,812.72 and 19,658.72

Step by Step Solution

1. Step 1: Write the proportion equation
   61,222.88 : 91,812.72 = 19,658.72 : x
2. Step 2: Convert to fraction form
   61,222.88/91,812.72 = 19,658.72/x
3. Step 3: Cross multiply
   61,222.88x = 91,812.72 × 19,658.72
4. Step 4: Simplify right side
   61,222.88x = 1,804,920,554.92
5. Step 5: Solve for x
   x = 1,804,920,554.92/61,222.88
6. Step 6: Final answer
   x = 29,481.14