Finding the Fourth Proportional to 65,040.86, 97,491.31 and 42,543.07

Step by Step Solution

1. Step 1: Write the proportion equation
   65,040.86 : 97,491.31 = 42,543.07 : x
2. Step 2: Convert to fraction form
   65,040.86/97,491.31 = 42,543.07/x
3. Step 3: Cross multiply
   65,040.86x = 97,491.31 × 42,543.07
4. Step 4: Simplify right side
   65,040.86x = 4,147,579,275.64
5. Step 5: Solve for x
   x = 4,147,579,275.64/65,040.86
6. Step 6: Final answer
   x = 63,768.82