Finding the Fourth Proportional to 71,918.01, 99,248.16 and 40,083.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,918.01 : 99,248.16 = 40,083.50 : x
2. Step 2: Convert to fraction form
   71,918.01/99,248.16 = 40,083.50/x
3. Step 3: Cross multiply
   71,918.01x = 99,248.16 × 40,083.50
4. Step 4: Simplify right side
   71,918.01x = 3,978,213,275.43
5. Step 5: Solve for x
   x = 3,978,213,275.43/71,918.01
6. Step 6: Final answer
   x = 55,315.95