Finding the Fourth Proportional to 65,700.68, 90,666.91 and 35,485.99

Step by Step Solution

1. Step 1: Write the proportion equation
   65,700.68 : 90,666.91 = 35,485.99 : x
2. Step 2: Convert to fraction form
   65,700.68/90,666.91 = 35,485.99/x
3. Step 3: Cross multiply
   65,700.68x = 90,666.91 × 35,485.99
4. Step 4: Simplify right side
   65,700.68x = 3,217,405,061.59
5. Step 5: Solve for x
   x = 3,217,405,061.59/65,700.68
6. Step 6: Final answer
   x = 48,970.65