Finding the Fourth Proportional to 65,742.72, 98,525.76 and 42,357.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,742.72 : 98,525.76 = 42,357.12 : x
2. Step 2: Convert to fraction form
   65,742.72/98,525.76 = 42,357.12/x
3. Step 3: Cross multiply
   65,742.72x = 98,525.76 × 42,357.12
4. Step 4: Simplify right side
   65,742.72x = 4,173,267,439.41
5. Step 5: Solve for x
   x = 4,173,267,439.41/65,742.72
6. Step 6: Final answer
   x = 63,478.78