Finding the Fourth Proportional to 71,019.25, 106,510.50 and 21,088.04

Step by Step Solution

1. Step 1: Write the proportion equation
   71,019.25 : 106,510.50 = 21,088.04 : x
2. Step 2: Convert to fraction form
   71,019.25/106,510.50 = 21,088.04/x
3. Step 3: Cross multiply
   71,019.25x = 106,510.50 × 21,088.04
4. Step 4: Simplify right side
   71,019.25x = 2,246,097,151.87
5. Step 5: Solve for x
   x = 2,246,097,151.87/71,019.25
6. Step 6: Final answer
   x = 31,626.60