Finding the Fourth Proportional to 81,120.72, 111,973.32 and 47,586

Step by Step Solution

1. Step 1: Write the proportion equation
   81,120.72 : 111,973.32 = 47,586 : x
2. Step 2: Convert to fraction form
   81,120.72/111,973.32 = 47,586/x
3. Step 3: Cross multiply
   81,120.72x = 111,973.32 × 47,586
4. Step 4: Simplify right side
   81,120.72x = 5,328,362,405.52
5. Step 5: Solve for x
   x = 5,328,362,405.52/81,120.72
6. Step 6: Final answer
   x = 65,684.36