Finding the Fourth Proportional to 105,172.63, 157,627.69 and 52,597.15

Step by Step Solution

1. Step 1: Write the proportion equation
   105,172.63 : 157,627.69 = 52,597.15 : x
2. Step 2: Convert to fraction form
   105,172.63/157,627.69 = 52,597.15/x
3. Step 3: Cross multiply
   105,172.63x = 157,627.69 × 52,597.15
4. Step 4: Simplify right side
   105,172.63x = 8,290,766,729.52
5. Step 5: Solve for x
   x = 8,290,766,729.52/105,172.63
6. Step 6: Final answer
   x = 78,830.08