Finding the Fourth Proportional to 89,109.88, 122,971.61 and 53,308.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,109.88 : 122,971.61 = 53,308.31 : x
2. Step 2: Convert to fraction form
   89,109.88/122,971.61 = 53,308.31/x
3. Step 3: Cross multiply
   89,109.88x = 122,971.61 × 53,308.31
4. Step 4: Simplify right side
   89,109.88x = 6,555,408,225.49
5. Step 5: Solve for x
   x = 6,555,408,225.49/89,109.88
6. Step 6: Final answer
   x = 73,565.45