Finding the Fourth Proportional to 72,250.07, 99,708.86 and 40,419.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,250.07 : 99,708.86 = 40,419.50 : x
2. Step 2: Convert to fraction form
   72,250.07/99,708.86 = 40,419.50/x
3. Step 3: Cross multiply
   72,250.07x = 99,708.86 × 40,419.50
4. Step 4: Simplify right side
   72,250.07x = 4,030,182,064.67
5. Step 5: Solve for x
   x = 4,030,182,064.67/72,250.07
6. Step 6: Final answer
   x = 55,781.01