Finding the Fourth Proportional to 81,019.98, 111,789.72 and 47,008.76

Step by Step Solution

1. Step 1: Write the proportion equation
   81,019.98 : 111,789.72 = 47,008.76 : x
2. Step 2: Convert to fraction form
   81,019.98/111,789.72 = 47,008.76/x
3. Step 3: Cross multiply
   81,019.98x = 111,789.72 × 47,008.76
4. Step 4: Simplify right side
   81,019.98x = 5,255,095,559.00
5. Step 5: Solve for x
   x = 5,255,095,559.00/81,019.98
6. Step 6: Final answer
   x = 64,861.72