Finding the Fourth Proportional to 72,350.80, 99,841.86 and 40,084.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,350.80 : 99,841.86 = 40,084.12 : x
2. Step 2: Convert to fraction form
   72,350.80/99,841.86 = 40,084.12/x
3. Step 3: Cross multiply
   72,350.80x = 99,841.86 × 40,084.12
4. Step 4: Simplify right side
   72,350.80x = 4,002,073,097.26
5. Step 5: Solve for x
   x = 4,002,073,097.26/72,350.80
6. Step 6: Final answer
   x = 55,314.84