Finding the Fourth Proportional to 65,970.72, 91,050.48 and 37,685.28

Step by Step Solution

1. Step 1: Write the proportion equation
   65,970.72 : 91,050.48 = 37,685.28 : x
2. Step 2: Convert to fraction form
   65,970.72/91,050.48 = 37,685.28/x
3. Step 3: Cross multiply
   65,970.72x = 91,050.48 × 37,685.28
4. Step 4: Simplify right side
   65,970.72x = 3,431,262,832.93
5. Step 5: Solve for x
   x = 3,431,262,832.93/65,970.72
6. Step 6: Final answer
   x = 52,011.91