Finding the Fourth Proportional to 105,072.45, 157,477.34 and 67,532.61

Step by Step Solution

1. Step 1: Write the proportion equation
   105,072.45 : 157,477.34 = 67,532.61 : x
2. Step 2: Convert to fraction form
   105,072.45/157,477.34 = 67,532.61/x
3. Step 3: Cross multiply
   105,072.45x = 157,477.34 × 67,532.61
4. Step 4: Simplify right side
   105,072.45x = 10,634,856,010.92
5. Step 5: Solve for x
   x = 10,634,856,010.92/105,072.45
6. Step 6: Final answer
   x = 101,214.50