Finding the Fourth Proportional to 72,147.96, 99,562.32 and 40,317.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72,147.96 : 99,562.32 = 40,317.08 : x
2. Step 2: Convert to fraction form
   72,147.96/99,562.32 = 40,317.08/x
3. Step 3: Cross multiply
   72,147.96x = 99,562.32 × 40,317.08
4. Step 4: Simplify right side
   72,147.96x = 4,014,061,522.61
5. Step 5: Solve for x
   x = 4,014,061,522.61/72,147.96
6. Step 6: Final answer
   x = 55,636.52