Finding the Fourth Proportional to 65,707.12, 90,653.34 and 37,405.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,707.12 : 90,653.34 = 37,405.72 : x
2. Step 2: Convert to fraction form
   65,707.12/90,653.34 = 37,405.72/x
3. Step 3: Cross multiply
   65,707.12x = 90,653.34 × 37,405.72
4. Step 4: Simplify right side
   65,707.12x = 3,390,953,453.10
5. Step 5: Solve for x
   x = 3,390,953,453.10/65,707.12
6. Step 6: Final answer
   x = 51,607.09