Finding the Fourth Proportional to 89,645.64, 134,425.59 and 52,216.39

Step by Step Solution

1. Step 1: Write the proportion equation
   89,645.64 : 134,425.59 = 52,216.39 : x
2. Step 2: Convert to fraction form
   89,645.64/134,425.59 = 52,216.39/x
3. Step 3: Cross multiply
   89,645.64x = 134,425.59 × 52,216.39
4. Step 4: Simplify right side
   89,645.64x = 7,019,218,501.54
5. Step 5: Solve for x
   x = 7,019,218,501.54/89,645.64
6. Step 6: Final answer
   x = 78,299.61