Finding the Fourth Proportional to 117,092.78, 175,639.63 and 28,346.15

Step by Step Solution

1. Step 1: Write the proportion equation
   117,092.78 : 175,639.63 = 28,346.15 : x
2. Step 2: Convert to fraction form
   117,092.78/175,639.63 = 28,346.15/x
3. Step 3: Cross multiply
   117,092.78x = 175,639.63 × 28,346.15
4. Step 4: Simplify right side
   117,092.78x = 4,978,706,348.86
5. Step 5: Solve for x
   x = 4,978,706,348.86/117,092.78
6. Step 6: Final answer
   x = 42,519.33