Finding the Fourth Proportional to 72,351.02, 99,842.06 and 40,084.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,351.02 : 99,842.06 = 40,084.30 : x
2. Step 2: Convert to fraction form
   72,351.02/99,842.06 = 40,084.30/x
3. Step 3: Cross multiply
   72,351.02x = 99,842.06 × 40,084.30
4. Step 4: Simplify right side
   72,351.02x = 4,002,099,085.66
5. Step 5: Solve for x
   x = 4,002,099,085.66/72,351.02
6. Step 6: Final answer
   x = 55,315.03