Finding the Fourth Proportional to 105,207, 145,189.98 and 60,495

Step by Step Solution

1. Step 1: Write the proportion equation
   105,207 : 145,189.98 = 60,495 : x
2. Step 2: Convert to fraction form
   105,207/145,189.98 = 60,495/x
3. Step 3: Cross multiply
   105,207x = 145,189.98 × 60,495
4. Step 4: Simplify right side
   105,207x = 8,783,267,840.10
5. Step 5: Solve for x
   x = 8,783,267,840.10/105,207
6. Step 6: Final answer
   x = 83,485.58