Finding the Fourth Proportional to 65,498.63, 90,388.10 and 35,690.63

Step by Step Solution

1. Step 1: Write the proportion equation
   65,498.63 : 90,388.10 = 35,690.63 : x
2. Step 2: Convert to fraction form
   65,498.63/90,388.10 = 35,690.63/x
3. Step 3: Cross multiply
   65,498.63x = 90,388.10 × 35,690.63
4. Step 4: Simplify right side
   65,498.63x = 3,226,007,870.79
5. Step 5: Solve for x
   x = 3,226,007,870.79/65,498.63
6. Step 6: Final answer
   x = 49,253.06