Finding the Fourth Proportional to 71,900.61, 99,225.72 and 40,069.23

Step by Step Solution

1. Step 1: Write the proportion equation
   71,900.61 : 99,225.72 = 40,069.23 : x
2. Step 2: Convert to fraction form
   71,900.61/99,225.72 = 40,069.23/x
3. Step 3: Cross multiply
   71,900.61x = 99,225.72 × 40,069.23
4. Step 4: Simplify right side
   71,900.61x = 3,975,898,196.60
5. Step 5: Solve for x
   x = 3,975,898,196.60/71,900.61
6. Step 6: Final answer
   x = 55,297.14