Finding the Fourth Proportional to 72,250, 99,703.54 and 40,419.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,250 : 99,703.54 = 40,419.16 : x
2. Step 2: Convert to fraction form
   72,250/99,703.54 = 40,419.16/x
3. Step 3: Cross multiply
   72,250x = 99,703.54 × 40,419.16
4. Step 4: Simplify right side
   72,250x = 4,029,933,335.83
5. Step 5: Solve for x
   x = 4,029,933,335.83/72,250
6. Step 6: Final answer
   x = 55,777.62