Finding the Fourth Proportional to 65,632.82, 90,695.90 and 53,691.80

Step by Step Solution

1. Step 1: Write the proportion equation
   65,632.82 : 90,695.90 = 53,691.80 : x
2. Step 2: Convert to fraction form
   65,632.82/90,695.90 = 53,691.80/x
3. Step 3: Cross multiply
   65,632.82x = 90,695.90 × 53,691.80
4. Step 4: Simplify right side
   65,632.82x = 4,869,625,804.37
5. Step 5: Solve for x
   x = 4,869,625,804.37/65,632.82
6. Step 6: Final answer
   x = 74,194.99