Finding the Fourth Proportional to 89,111.10, 122,973.30 and 53,309.54

Step by Step Solution

1. Step 1: Write the proportion equation
   89,111.10 : 122,973.30 = 53,309.54 : x
2. Step 2: Convert to fraction form
   89,111.10/122,973.30 = 53,309.54/x
3. Step 3: Cross multiply
   89,111.10x = 122,973.30 × 53,309.54
4. Step 4: Simplify right side
   89,111.10x = 6,555,649,440.42
5. Step 5: Solve for x
   x = 6,555,649,440.42/89,111.10
6. Step 6: Final answer
   x = 73,567.15