Finding the Fourth Proportional to 65,499.63, 90,389.48 and 35,691.63

Step by Step Solution

1. Step 1: Write the proportion equation
   65,499.63 : 90,389.48 = 35,691.63 : x
2. Step 2: Convert to fraction form
   65,499.63/90,389.48 = 35,691.63/x
3. Step 3: Cross multiply
   65,499.63x = 90,389.48 × 35,691.63
4. Step 4: Simplify right side
   65,499.63x = 3,226,147,876.05
5. Step 5: Solve for x
   x = 3,226,147,876.05/65,499.63
6. Step 6: Final answer
   x = 49,254.44