Finding the Fourth Proportional to 105,191.48, 145,158.31 and 59,880.49

Step by Step Solution

1. Step 1: Write the proportion equation
   105,191.48 : 145,158.31 = 59,880.49 : x
2. Step 2: Convert to fraction form
   105,191.48/145,158.31 = 59,880.49/x
3. Step 3: Cross multiply
   105,191.48x = 145,158.31 × 59,880.49
4. Step 4: Simplify right side
   105,191.48x = 8,692,150,730.37
5. Step 5: Solve for x
   x = 8,692,150,730.37/105,191.48
6. Step 6: Final answer
   x = 82,631.70