Finding the Fourth Proportional to 65,407.50, 98,146.69 and 50,645.25

Step by Step Solution

1. Step 1: Write the proportion equation
   65,407.50 : 98,146.69 = 50,645.25 : x
2. Step 2: Convert to fraction form
   65,407.50/98,146.69 = 50,645.25/x
3. Step 3: Cross multiply
   65,407.50x = 98,146.69 × 50,645.25
4. Step 4: Simplify right side
   65,407.50x = 4,970,663,525.11
5. Step 5: Solve for x
   x = 4,970,663,525.11/65,407.50
6. Step 6: Final answer
   x = 75,995.31