Finding the Fourth Proportional to 72,100.90, 99,499.08 and 41,879.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,100.90 : 99,499.08 = 41,879.80 : x
2. Step 2: Convert to fraction form
   72,100.90/99,499.08 = 41,879.80/x
3. Step 3: Cross multiply
   72,100.90x = 99,499.08 × 41,879.80
4. Step 4: Simplify right side
   72,100.90x = 4,167,001,570.58
5. Step 5: Solve for x
   x = 4,167,001,570.58/72,100.90
6. Step 6: Final answer
   x = 57,794.03