Finding the Fourth Proportional to 65,713.86, 90,685.02 and 35,499.18

Step by Step Solution

1. Step 1: Write the proportion equation
   65,713.86 : 90,685.02 = 35,499.18 : x
2. Step 2: Convert to fraction form
   65,713.86/90,685.02 = 35,499.18/x
3. Step 3: Cross multiply
   65,713.86x = 90,685.02 × 35,499.18
4. Step 4: Simplify right side
   65,713.86x = 3,219,243,848.28
5. Step 5: Solve for x
   x = 3,219,243,848.28/65,713.86
6. Step 6: Final answer
   x = 48,988.81