Finding the Fourth Proportional to 105,172.88, 157,759.34 and 31,300.88

Step by Step Solution

1. Step 1: Write the proportion equation
   105,172.88 : 157,759.34 = 31,300.88 : x
2. Step 2: Convert to fraction form
   105,172.88/157,759.34 = 31,300.88/x
3. Step 3: Cross multiply
   105,172.88x = 157,759.34 × 31,300.88
4. Step 4: Simplify right side
   105,172.88x = 4,938,005,224.92
5. Step 5: Solve for x
   x = 4,938,005,224.92/105,172.88
6. Step 6: Final answer
   x = 46,951.32