Finding the Fourth Proportional to 89,115, 122,978.70 and 53,306.52

Step by Step Solution

1. Step 1: Write the proportion equation
   89,115 : 122,978.70 = 53,306.52 : x
2. Step 2: Convert to fraction form
   89,115/122,978.70 = 53,306.52/x
3. Step 3: Cross multiply
   89,115x = 122,978.70 × 53,306.52
4. Step 4: Simplify right side
   89,115x = 6,555,566,531.12
5. Step 5: Solve for x
   x = 6,555,566,531.12/89,115
6. Step 6: Final answer
   x = 73,563.00