Finding the Fourth Proportional to 71,806.72, 99,099.52 and 42,008.32

Step by Step Solution

1. Step 1: Write the proportion equation
   71,806.72 : 99,099.52 = 42,008.32 : x
2. Step 2: Convert to fraction form
   71,806.72/99,099.52 = 42,008.32/x
3. Step 3: Cross multiply
   71,806.72x = 99,099.52 × 42,008.32
4. Step 4: Simplify right side
   71,806.72x = 4,163,004,348.01
5. Step 5: Solve for x
   x = 4,163,004,348.01/71,806.72
6. Step 6: Final answer
   x = 57,975.14