Finding the Fourth Proportional to 65,751.98, 90,749.10 and 63,564.98

Step by Step Solution

1. Step 1: Write the proportion equation
   65,751.98 : 90,749.10 = 63,564.98 : x
2. Step 2: Convert to fraction form
   65,751.98/90,749.10 = 63,564.98/x
3. Step 3: Cross multiply
   65,751.98x = 90,749.10 × 63,564.98
4. Step 4: Simplify right side
   65,751.98x = 5,768,464,726.52
5. Step 5: Solve for x
   x = 5,768,464,726.52/65,751.98
6. Step 6: Final answer
   x = 87,730.66