Finding the Fourth Proportional to 89,125, 122,992.50 and 53,316.52

Step by Step Solution

1. Step 1: Write the proportion equation
   89,125 : 122,992.50 = 53,316.52 : x
2. Step 2: Convert to fraction form
   89,125/122,992.50 = 53,316.52/x
3. Step 3: Cross multiply
   89,125x = 122,992.50 × 53,316.52
4. Step 4: Simplify right side
   89,125x = 6,557,532,086.10
5. Step 5: Solve for x
   x = 6,557,532,086.10/89,125
6. Step 6: Final answer
   x = 73,576.80