Finding the Fourth Proportional to 65,210.52, 89,990.60 and 35,402.52

Step by Step Solution

1. Step 1: Write the proportion equation
   65,210.52 : 89,990.60 = 35,402.52 : x
2. Step 2: Convert to fraction form
   65,210.52/89,990.60 = 35,402.52/x
3. Step 3: Cross multiply
   65,210.52x = 89,990.60 × 35,402.52
4. Step 4: Simplify right side
   65,210.52x = 3,185,894,016.31
5. Step 5: Solve for x
   x = 3,185,894,016.31/65,210.52
6. Step 6: Final answer
   x = 48,855.52