Finding the Fourth Proportional to 65,293.80, 97,936.59 and 38,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,293.80 : 97,936.59 = 38,978.72 : x
2. Step 2: Convert to fraction form
   65,293.80/97,936.59 = 38,978.72/x
3. Step 3: Cross multiply
   65,293.80x = 97,936.59 × 38,978.72
4. Step 4: Simplify right side
   65,293.80x = 3,817,442,943.11
5. Step 5: Solve for x
   x = 3,817,442,943.11/65,293.80
6. Step 6: Final answer
   x = 58,465.63