Finding the Fourth Proportional to 65,131.48, 89,921.76 and 49,995.16

Step by Step Solution

1. Step 1: Write the proportion equation
   65,131.48 : 89,921.76 = 49,995.16 : x
2. Step 2: Convert to fraction form
   65,131.48/89,921.76 = 49,995.16/x
3. Step 3: Cross multiply
   65,131.48x = 89,921.76 × 49,995.16
4. Step 4: Simplify right side
   65,131.48x = 4,495,652,778.68
5. Step 5: Solve for x
   x = 4,495,652,778.68/65,131.48
6. Step 6: Final answer
   x = 69,024.27