Finding the Fourth Proportional to 105,172, 157,763.12 and 31,300.64

Step by Step Solution

1. Step 1: Write the proportion equation
   105,172 : 157,763.12 = 31,300.64 : x
2. Step 2: Convert to fraction form
   105,172/157,763.12 = 31,300.64/x
3. Step 3: Cross multiply
   105,172x = 157,763.12 × 31,300.64
4. Step 4: Simplify right side
   105,172x = 4,938,086,624.40
5. Step 5: Solve for x
   x = 4,938,086,624.40/105,172
6. Step 6: Final answer
   x = 46,952.48