Finding the Fourth Proportional to 117,025.92, 175,196.16 and 72,518.40

Step by Step Solution

1. Step 1: Write the proportion equation
   117,025.92 : 175,196.16 = 72,518.40 : x
2. Step 2: Convert to fraction form
   117,025.92/175,196.16 = 72,518.40/x
3. Step 3: Cross multiply
   117,025.92x = 175,196.16 × 72,518.40
4. Step 4: Simplify right side
   117,025.92x = 12,704,945,209.34
5. Step 5: Solve for x
   x = 12,704,945,209.34/117,025.92
6. Step 6: Final answer
   x = 108,565.22