Finding the Fourth Proportional to 65,706.12, 90,669.42 and 37,406.16

Step by Step Solution

1. Step 1: Write the proportion equation
   65,706.12 : 90,669.42 = 37,406.16 : x
2. Step 2: Convert to fraction form
   65,706.12/90,669.42 = 37,406.16/x
3. Step 3: Cross multiply
   65,706.12x = 90,669.42 × 37,406.16
4. Step 4: Simplify right side
   65,706.12x = 3,391,594,831.63
5. Step 5: Solve for x
   x = 3,391,594,831.63/65,706.12
6. Step 6: Final answer
   x = 51,617.64