Finding the Fourth Proportional to 68,091.45, 93,940.41 and 42,238.05

Step by Step Solution

1. Step 1: Write the proportion equation
   68,091.45 : 93,940.41 = 42,238.05 : x
2. Step 2: Convert to fraction form
   68,091.45/93,940.41 = 42,238.05/x
3. Step 3: Cross multiply
   68,091.45x = 93,940.41 × 42,238.05
4. Step 4: Simplify right side
   68,091.45x = 3,967,859,734.60
5. Step 5: Solve for x
   x = 3,967,859,734.60/68,091.45
6. Step 6: Final answer
   x = 58,272.51