Finding the Fourth Proportional to 117,086.92, 175,285.86 and 72,570.76

Step by Step Solution

1. Step 1: Write the proportion equation
   117,086.92 : 175,285.86 = 72,570.76 : x
2. Step 2: Convert to fraction form
   117,086.92/175,285.86 = 72,570.76/x
3. Step 3: Cross multiply
   117,086.92x = 175,285.86 × 72,570.76
4. Step 4: Simplify right side
   117,086.92x = 12,720,628,077.45
5. Step 5: Solve for x
   x = 12,720,628,077.45/117,086.92
6. Step 6: Final answer
   x = 108,642.61