Finding the Fourth Proportional to 61,223.56, 91,826.70 and 19,665.16

Step by Step Solution

1. Step 1: Write the proportion equation
   61,223.56 : 91,826.70 = 19,665.16 : x
2. Step 2: Convert to fraction form
   61,223.56/91,826.70 = 19,665.16/x
3. Step 3: Cross multiply
   61,223.56x = 91,826.70 × 19,665.16
4. Step 4: Simplify right side
   61,223.56x = 1,805,786,747.77
5. Step 5: Solve for x
   x = 1,805,786,747.77/61,223.56
6. Step 6: Final answer
   x = 29,494.96