Finding the Fourth Proportional to 72,393.89, 108,812.25 and 70,843.55

Step by Step Solution

1. Step 1: Write the proportion equation
   72,393.89 : 108,812.25 = 70,843.55 : x
2. Step 2: Convert to fraction form
   72,393.89/108,812.25 = 70,843.55/x
3. Step 3: Cross multiply
   72,393.89x = 108,812.25 × 70,843.55
4. Step 4: Simplify right side
   72,393.89x = 7,708,645,529.43
5. Step 5: Solve for x
   x = 7,708,645,529.43/72,393.89
6. Step 6: Final answer
   x = 106,482.00