Finding the Fourth Proportional to 105,225, 157,915.42 and 49,821.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,225 : 157,915.42 = 49,821.16 : x
2. Step 2: Convert to fraction form
   105,225/157,915.42 = 49,821.16/x
3. Step 3: Cross multiply
   105,225x = 157,915.42 × 49,821.16
4. Step 4: Simplify right side
   105,225x = 7,867,529,406.29
5. Step 5: Solve for x
   x = 7,867,529,406.29/105,225
6. Step 6: Final answer
   x = 74,768.63