Finding the Fourth Proportional to 93,221.86, 139,787.02 and 39,906.31

Step by Step Solution

1. Step 1: Write the proportion equation
   93,221.86 : 139,787.02 = 39,906.31 : x
2. Step 2: Convert to fraction form
   93,221.86/139,787.02 = 39,906.31/x
3. Step 3: Cross multiply
   93,221.86x = 139,787.02 × 39,906.31
4. Step 4: Simplify right side
   93,221.86x = 5,578,384,154.10
5. Step 5: Solve for x
   x = 5,578,384,154.10/93,221.86
6. Step 6: Final answer
   x = 59,839.87