Finding the Fourth Proportional to 93,142.77, 139,724.16 and 39,840.29

Step by Step Solution

1. Step 1: Write the proportion equation
   93,142.77 : 139,724.16 = 39,840.29 : x
2. Step 2: Convert to fraction form
   93,142.77/139,724.16 = 39,840.29/x
3. Step 3: Cross multiply
   93,142.77x = 139,724.16 × 39,840.29
4. Step 4: Simplify right side
   93,142.77x = 5,566,651,054.41
5. Step 5: Solve for x
   x = 5,566,651,054.41/93,142.77
6. Step 6: Final answer
   x = 59,764.71