Finding the Fourth Proportional to 89,647.16, 134,427.83 and 52,217.90

Step by Step Solution

1. Step 1: Write the proportion equation
   89,647.16 : 134,427.83 = 52,217.90 : x
2. Step 2: Convert to fraction form
   89,647.16/134,427.83 = 52,217.90/x
3. Step 3: Cross multiply
   89,647.16x = 134,427.83 × 52,217.90
4. Step 4: Simplify right side
   89,647.16x = 7,019,538,050.93
5. Step 5: Solve for x
   x = 7,019,538,050.93/89,647.16
6. Step 6: Final answer
   x = 78,301.85