Finding the Fourth Proportional to 65,708.12, 90,654.72 and 37,406.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,708.12 : 90,654.72 = 37,406.72 : x
2. Step 2: Convert to fraction form
   65,708.12/90,654.72 = 37,406.72/x
3. Step 3: Cross multiply
   65,708.12x = 90,654.72 × 37,406.72
4. Step 4: Simplify right side
   65,708.12x = 3,391,095,727.72
5. Step 5: Solve for x
   x = 3,391,095,727.72/65,708.12
6. Step 6: Final answer
   x = 51,608.47