Finding the Fourth Proportional to 65,204.64, 90,025.61 and 50,070.15

Step by Step Solution

1. Step 1: Write the proportion equation
   65,204.64 : 90,025.61 = 50,070.15 : x
2. Step 2: Convert to fraction form
   65,204.64/90,025.61 = 50,070.15/x
3. Step 3: Cross multiply
   65,204.64x = 90,025.61 × 50,070.15
4. Step 4: Simplify right side
   65,204.64x = 4,507,595,796.54
5. Step 5: Solve for x
   x = 4,507,595,796.54/65,204.64
6. Step 6: Final answer
   x = 69,129.99