Finding the Fourth Proportional to 219,081.12, 328,608.72 and 61,306.08

Step by Step Solution

1. Step 1: Write the proportion equation
   219,081.12 : 328,608.72 = 61,306.08 : x
2. Step 2: Convert to fraction form
   219,081.12/328,608.72 = 61,306.08/x
3. Step 3: Cross multiply
   219,081.12x = 328,608.72 × 61,306.08
4. Step 4: Simplify right side
   219,081.12x = 20,145,712,477.02
5. Step 5: Solve for x
   x = 20,145,712,477.02/219,081.12
6. Step 6: Final answer
   x = 91,955.49