Finding the Fourth Proportional to 72,498.30, 108,601.65 and 48,878.70

Step by Step Solution

1. Step 1: Write the proportion equation
   72,498.30 : 108,601.65 = 48,878.70 : x
2. Step 2: Convert to fraction form
   72,498.30/108,601.65 = 48,878.70/x
3. Step 3: Cross multiply
   72,498.30x = 108,601.65 × 48,878.70
4. Step 4: Simplify right side
   72,498.30x = 5,308,307,469.86
5. Step 5: Solve for x
   x = 5,308,307,469.86/72,498.30
6. Step 6: Final answer
   x = 73,219.75