Finding the Fourth Proportional to 92,985.72, 139,474.92 and 39,655.72

Step by Step Solution

1. Step 1: Write the proportion equation
   92,985.72 : 139,474.92 = 39,655.72 : x
2. Step 2: Convert to fraction form
   92,985.72/139,474.92 = 39,655.72/x
3. Step 3: Cross multiply
   92,985.72x = 139,474.92 × 39,655.72
4. Step 4: Simplify right side
   92,985.72x = 5,530,978,374.54
5. Step 5: Solve for x
   x = 5,530,978,374.54/92,985.72
6. Step 6: Final answer
   x = 59,482.02